61766184272 has 40 divisors (see below), whose sum is σ = 128892479520. Its totient is φ = 28504160640.

The previous prime is 61766184239. The next prime is 61766184281. The reversal of 61766184272 is 27248166716.

It is a self number, because there is not a number n which added to its sum of digits gives 61766184272.

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, 3512879 + ... + 3530417.

It is an arithmetic number, because the mean of its divisors is an integer number (3222311988).

Almost surely, 2^61766184272 is an apocalyptic number.

It is an amenable number.

61766184272 is an abundant number, since it is smaller than the sum of its proper divisors (67126295248).

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

61766184272 is a wasteful number, since it uses less digits than its factorization.

61766184272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491 (or 34485 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The spelling of 61766184272 in words is "sixty-one billion, seven hundred sixty-six million, one hundred eighty-four thousand, two hundred seventy-two".