91899896158080 has 96 divisors (see below), whose sum is σ = 317341828940760. Its totient is φ = 24506638973952.

The previous prime is 91899896158079. The next prime is 91899896158097. The reversal of 91899896158080 is 8085169899819.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7977415782 + ... + 7977427301.

Almost surely, 2^{91899896158080} is an apocalyptic number.

91899896158080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91899896158080 is an abundant number, since it is smaller than the sum of its proper divisors (225441932782680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91899896158080 is a wasteful number, since it uses less digits than its factorization.

91899896158080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15954843108 (or 15954843093 counting only the distinct ones).

The product of its (nonzero) digits is 806215680, while the sum is 81.

The spelling of 91899896158080 in words is "ninety-one trillion, eight hundred ninety-nine billion, eight hundred ninety-six million, one hundred fifty-eight thousand, eighty".