91487998584495 has 192 divisors, whose sum is σ = 165283813094400. Its totient is φ = 46787569920000.

The previous prime is 91487998584473. The next prime is 91487998584547. The reversal of 91487998584495 is 59448589978419.

91487998584495 is a `hidden beast` number, since 9 + 1 + 4 + 8 + 79 + 98 + 5 + 8 + 449 + 5 = 666.

It is not a de Polignac number, because 91487998584495 - 2²⁶ = 91487931475631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 15636298320 + ... + 15636304170.

It is an arithmetic number, because the mean of its divisors is an integer number (860853193200).

Almost surely, 2^{91487998584495} is an apocalyptic number.

91487998584495 is a deficient number, since it is larger than the sum of its proper divisors (73795814509905).

91487998584495 is a wasteful number, since it uses less digits than its factorization.

91487998584495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6862 (or 6859 counting only the distinct ones).

The product of its digits is 37623398400, while the sum is 90.

The spelling of 91487998584495 in words is "ninety-one trillion, four hundred eighty-seven billion, nine hundred ninety-eight million, five hundred eighty-four thousand, four hundred ninety-five".