401202767440 has 40 divisors (see below), whose sum is σ = 933885037800. Its totient is φ = 160293820416.

The previous prime is 401202767437. The next prime is 401202767453. The reversal of 401202767440 is 44767202104.

It can be written as a sum of positive squares in 4 ways, for example, as 162679928896 + 238522838544 = 403336^2 + 488388^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 401202767440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2857365 + ... + 2994484.

It is an arithmetic number, because the mean of its divisors is an integer number (23347125945).

Almost surely, 2^401202767440 is an apocalyptic number.

401202767440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401202767440 is an abundant number, since it is smaller than the sum of its proper divisors (532682270360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401202767440 is a wasteful number, since it uses less digits than its factorization.

401202767440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5852719 (or 5852713 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

Adding to 401202767440 its reverse (44767202104), we get a palindrome (445969969544).

The spelling of 401202767440 in words is "four hundred one billion, two hundred two million, seven hundred sixty-seven thousand, four hundred forty".