40072546620 has 36 divisors (see below), whose sum is σ = 121553391960. Its totient is φ = 10686012384.

The previous prime is 40072546571. The next prime is 40072546621. The reversal of 40072546620 is 2664527004.

40072546620 is a `hidden beast` number, since 4 + 0 + 0 + 7 + 25 + 4 + 6 + 620 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×40072546620² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072546621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111312450 + ... + 111312809.

It is an arithmetic number, because the mean of its divisors is an integer number (3376483110).

Almost surely, 2^40072546620 is an apocalyptic number.

It is an amenable number.

40072546620 is an abundant number, since it is smaller than the sum of its proper divisors (81480845340).

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

40072546620 is a wasteful number, since it uses less digits than its factorization.

40072546620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222625274 (or 222625269 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 40072546620 in words is "forty billion, seventy-two million, five hundred forty-six thousand, six hundred twenty".