75977674957 has 2 divisors, whose sum is σ = 75977674958. Its totient is φ = 75977674956.

The previous prime is 75977674937. The next prime is 75977674967. The reversal of 75977674957 is 75947677957.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73578732516 + 2398942441 = 271254^2 + 48979^2 .

It is a cyclic number.

It is not a de Polignac number, because 75977674957 - 2¹⁵ = 75977642189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75977674957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75977674937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37988837478 + 37988837479.

It is an arithmetic number, because the mean of its divisors is an integer number (37988837479).

Almost surely, 2^75977674957 is an apocalyptic number.

It is an amenable number.

75977674957 is a deficient number, since it is larger than the sum of its proper divisors (1).

75977674957 is an equidigital number, since it uses as much as digits as its factorization.

75977674957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816820200, while the sum is 73.

The spelling of 75977674957 in words is "seventy-five billion, nine hundred seventy-seven million, six hundred seventy-four thousand, nine hundred fifty-seven".