75977677213 has 2 divisors, whose sum is σ = 75977677214. Its totient is φ = 75977677212.

The previous prime is 75977677207. The next prime is 75977677249. The reversal of 75977677213 is 31277677957.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73399271929 + 2578405284 = 270923^2 + 50778^2 .

It is a cyclic number.

It is not a de Polignac number, because 75977677213 - 2⁹ = 75977676701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75977677283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37988838606 + 37988838607.

It is an arithmetic number, because the mean of its divisors is an integer number (37988838607).

Almost surely, 2^75977677213 is an apocalyptic number.

It is an amenable number.

75977677213 is a deficient number, since it is larger than the sum of its proper divisors (1).

75977677213 is an equidigital number, since it uses as much as digits as its factorization.

75977677213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27227340, while the sum is 61.

The spelling of 75977677213 in words is "seventy-five billion, nine hundred seventy-seven million, six hundred seventy-seven thousand, two hundred thirteen".