61376978724057 has 12 divisors (see below), whose sum is σ = 88756038704944. Its totient is φ = 40871646075960.

The previous prime is 61376978724031. The next prime is 61376978724071. The reversal of 61376978724057 is 75042787967316.

61376978724057 is a `hidden beast` number, since 6 + 1 + 376 + 9 + 7 + 8 + 7 + 240 + 5 + 7 = 666.

61376978724057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61376978724057 - 2²⁴ = 61376961946841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61376978726057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3861636619 + ... + 3861652512.

It is a 1-persistent number, because it is pandigital, but 2⋅61376978724057 = 122753957448114 is not.

Almost surely, 2^{61376978724057} is an apocalyptic number.

It is an amenable number.

61376978724057 is a deficient number, since it is larger than the sum of its proper divisors (27379059980887).

61376978724057 is a wasteful number, since it uses less digits than its factorization.

61376978724057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723290020 (or 7723290017 counting only the distinct ones).

The product of its (nonzero) digits is 746807040, while the sum is 72.

The spelling of 61376978724057 in words is "sixty-one trillion, three hundred seventy-six billion, nine hundred seventy-eight million, seven hundred twenty-four thousand, fifty-seven".