91200621214044 has 72 divisors (see below), whose sum is σ = 246781342080000. Its totient is φ = 28312057242144.

The previous prime is 91200621214039. The next prime is 91200621214051. The reversal of 91200621214044 is 44041212600219.

91200621214044 is a `hidden beast` number, since 9 + 1 + 2 + 0 + 0 + 621 + 21 + 4 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129910844 + ... + 1129991555.

It is an arithmetic number, because the mean of its divisors is an integer number (3427518640000).

Almost surely, 2^{91200621214044} is an apocalyptic number.

It is an amenable number.

91200621214044 is an abundant number, since it is smaller than the sum of its proper divisors (155580720865956).

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

91200621214044 is a wasteful number, since it uses less digits than its factorization.

91200621214044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259902487 (or 2259902482 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 91200621214044 in words is "ninety-one trillion, two hundred billion, six hundred twenty-one million, two hundred fourteen thousand, forty-four".