91877358401 has 2 divisors, whose sum is σ = 91877358402. Its totient is φ = 91877358400.

The previous prime is 91877358337. The next prime is 91877358427. The reversal of 91877358401 is 10485377819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58534963600 + 33342394801 = 241940^2 + 182599^2 .

It is a cyclic number.

It is not a de Polignac number, because 91877358401 - 2⁶ = 91877358337 is a prime.

It is not a weakly prime, because it can be changed into another prime (91877358101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45938679200 + 45938679201.

It is an arithmetic number, because the mean of its divisors is an integer number (45938679201).

Almost surely, 2^91877358401 is an apocalyptic number.

It is an amenable number.

91877358401 is a deficient number, since it is larger than the sum of its proper divisors (1).

91877358401 is an equidigital number, since it uses as much as digits as its factorization.

91877358401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 91877358401 in words is "ninety-one billion, eight hundred seventy-seven million, three hundred fifty-eight thousand, four hundred one".