56680178261 has 16 divisors (see below), whose sum is σ = 68728686336. Its totient is φ = 45631247616.

The previous prime is 56680178239. The next prime is 56680178267. The reversal of 56680178261 is 16287108665.

56680178261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56680178261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56680178267) 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, 431066 + ... + 546971.

It is an arithmetic number, because the mean of its divisors is an integer number (4295542896).

Almost surely, 2^56680178261 is an apocalyptic number.

It is an amenable number.

56680178261 is a deficient number, since it is larger than the sum of its proper divisors (12048508075).

56680178261 is a wasteful number, since it uses less digits than its factorization.

56680178261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978548.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 56680178261 in words is "fifty-six billion, six hundred eighty million, one hundred seventy-eight thousand, two hundred sixty-one".