72761710181 has 16 divisors (see below), whose sum is σ = 77219879040. Its totient is φ = 68455020480.

The previous prime is 72761710169. The next prime is 72761710187. The reversal of 72761710181 is 18101716727.

It is a cyclic number.

It is not a de Polignac number, because 72761710181 - 2⁶ = 72761710117 is a prime.

It is a super-2 number, since 2×72761710181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72761710187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2921 + ... + 381486.

It is an arithmetic number, because the mean of its divisors is an integer number (4826242440).

Almost surely, 2^72761710181 is an apocalyptic number.

It is an amenable number.

72761710181 is a deficient number, since it is larger than the sum of its proper divisors (4458168859).

72761710181 is a wasteful number, since it uses less digits than its factorization.

72761710181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384604.

The product of its (nonzero) digits is 32928, while the sum is 41.

The spelling of 72761710181 in words is "seventy-two billion, seven hundred sixty-one million, seven hundred ten thousand, one hundred eighty-one".