74504977957 has 2 divisors, whose sum is σ = 74504977958. Its totient is φ = 74504977956.

The previous prime is 74504977919. The next prime is 74504977969. The reversal of 74504977957 is 75977940547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64289630916 + 10215347041 = 253554^2 + 101071^2 .

It is a cyclic number.

It is not a de Polignac number, because 74504977957 - 2¹⁹ = 74504453669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74504977907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37252488978 + 37252488979.

It is an arithmetic number, because the mean of its divisors is an integer number (37252488979).

Almost surely, 2^74504977957 is an apocalyptic number.

It is an amenable number.

74504977957 is a deficient number, since it is larger than the sum of its proper divisors (1).

74504977957 is an equidigital number, since it uses as much as digits as its factorization.

74504977957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77792400, while the sum is 64.

The spelling of 74504977957 in words is "seventy-four billion, five hundred four million, nine hundred seventy-seven thousand, nine hundred fifty-seven".