91523132033491 has 2 divisors, whose sum is σ = 91523132033492. Its totient is φ = 91523132033490.

The previous prime is 91523132033477. The next prime is 91523132033521. The reversal of 91523132033491 is 19433023132519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91523132033491 - 2⁹ = 91523132032979 is a prime.

It is not a weakly prime, because it can be changed into another prime (91523132033401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45761566016745 + 45761566016746.

It is an arithmetic number, because the mean of its divisors is an integer number (45761566016746).

Almost surely, 2^{91523132033491} is an apocalyptic number.

91523132033491 is a deficient number, since it is larger than the sum of its proper divisors (1).

91523132033491 is an equidigital number, since it uses as much as digits as its factorization.

91523132033491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 46.

The spelling of 91523132033491 in words is "ninety-one trillion, five hundred twenty-three billion, one hundred thirty-two million, thirty-three thousand, four hundred ninety-one".