91528477361 has 2 divisors, whose sum is σ = 91528477362. Its totient is φ = 91528477360.

The previous prime is 91528477351. The next prime is 91528477373. The reversal of 91528477361 is 16377482519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78873352336 + 12655125025 = 280844^2 + 112495^2 .

It is a cyclic number.

It is not a de Polignac number, because 91528477361 - 2³⁴ = 74348608177 is a prime.

It is not a weakly prime, because it can be changed into another prime (91528477351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45764238680 + 45764238681.

It is an arithmetic number, because the mean of its divisors is an integer number (45764238681).

Almost surely, 2^91528477361 is an apocalyptic number.

It is an amenable number.

91528477361 is a deficient number, since it is larger than the sum of its proper divisors (1).

91528477361 is an equidigital number, since it uses as much as digits as its factorization.

91528477361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The spelling of 91528477361 in words is "ninety-one billion, five hundred twenty-eight million, four hundred seventy-seven thousand, three hundred sixty-one".