201271073620 has 24 divisors (see below), whose sum is σ = 422734823784. Its totient is φ = 80495940096.

The previous prime is 201271073573. The next prime is 201271073683. The reversal of 201271073620 is 26370172102.

It can be written as a sum of positive squares in 4 ways, for example, as 9780814404 + 191490259216 = 98898^2 + 437596^2 .

It is a super-2 number, since 2×201271073620² (a number of 23 digits) contains 22 as substring.

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, 647889 + ... + 906808.

It is an arithmetic number, because the mean of its divisors is an integer number (17613950991).

Almost surely, 2^201271073620 is an apocalyptic number.

201271073620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201271073620 is an abundant number, since it is smaller than the sum of its proper divisors (221463750164).

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

201271073620 is a wasteful number, since it uses less digits than its factorization.

201271073620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561179 (or 1561177 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The spelling of 201271073620 in words is "two hundred one billion, two hundred seventy-one million, seventy-three thousand, six hundred twenty".