91675500377 has 2 divisors, whose sum is σ = 91675500378. Its totient is φ = 91675500376.

The previous prime is 91675500359. The next prime is 91675500391. The reversal of 91675500377 is 77300557619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74382198361 + 17293302016 = 272731^2 + 131504^2 .

It is a cyclic number.

It is not a de Polignac number, because 91675500377 - 2⁸ = 91675500121 is a prime.

It is not a weakly prime, because it can be changed into another prime (91675500317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45837750188 + 45837750189.

It is an arithmetic number, because the mean of its divisors is an integer number (45837750189).

Almost surely, 2^91675500377 is an apocalyptic number.

It is an amenable number.

91675500377 is a deficient number, since it is larger than the sum of its proper divisors (1).

91675500377 is an equidigital number, since it uses as much as digits as its factorization.

91675500377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1389150, while the sum is 50.

The spelling of 91675500377 in words is "ninety-one billion, six hundred seventy-five million, five hundred thousand, three hundred seventy-seven".