91420631200 has 36 divisors (see below), whose sum is σ = 223180617870. Its totient is φ = 36568252160.

The previous prime is 91420631177. The next prime is 91420631207. The reversal of 91420631200 is 213602419.

It can be written as a sum of positive squares in 3 ways, for example, as 33883973776 + 57536657424 = 184076^2 + 239868^2 .

It is not an unprimeable number, because it can be changed into a prime (91420631207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57137095 + ... + 57138694.

Almost surely, 2^91420631200 is an apocalyptic number.

It is an amenable number.

91420631200 is an abundant number, since it is smaller than the sum of its proper divisors (131759986670).

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

91420631200 is a wasteful number, since it uses less digits than its factorization.

91420631200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114275809 (or 114275796 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 91420631200 in words is "ninety-one billion, four hundred twenty million, six hundred thirty-one thousand, two hundred".