56949079181 has 2 divisors, whose sum is σ = 56949079182. Its totient is φ = 56949079180.

The previous prime is 56949079177. The next prime is 56949079247. The reversal of 56949079181 is 18197094965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42154249225 + 14794829956 = 205315^2 + 121634^2 .

It is a cyclic number.

It is not a de Polignac number, because 56949079181 - 2² = 56949079177 is a prime.

It is a super-2 number, since 2×56949079181² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56949079181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56949079141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28474539590 + 28474539591.

It is an arithmetic number, because the mean of its divisors is an integer number (28474539591).

Almost surely, 2^56949079181 is an apocalyptic number.

It is an amenable number.

56949079181 is a deficient number, since it is larger than the sum of its proper divisors (1).

56949079181 is an equidigital number, since it uses as much as digits as its factorization.

56949079181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 56949079181 in words is "fifty-six billion, nine hundred forty-nine million, seventy-nine thousand, one hundred eighty-one".