61576453656 has 48 divisors (see below), whose sum is σ = 166785498360. Its totient is φ = 20523523200.

The previous prime is 61576453651. The next prime is 61576453709. The reversal of 61576453656 is 65635467516.

61576453656 is a `hidden beast` number, since 6 + 1 + 57 + 6 + 4 + 536 + 56 = 666.

61576453656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61576453651) 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, 852556 + ... + 921956.

Almost surely, 2^61576453656 is an apocalyptic number.

It is an amenable number.

61576453656 is an abundant number, since it is smaller than the sum of its proper divisors (105209044704).

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

61576453656 is a wasteful number, since it uses less digits than its factorization.

61576453656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81736 (or 81729 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 54.

The spelling of 61576453656 in words is "sixty-one billion, five hundred seventy-six million, four hundred fifty-three thousand, six hundred fifty-six".