91238630760 has 96 divisors (see below), whose sum is σ = 313968250440. Its totient is φ = 22899105792.

The previous prime is 91238630731. The next prime is 91238630767. The reversal of 91238630760 is 6703683219.

91238630760 is a `hidden beast` number, since 9 + 1 + 2 + 3 + 8 + 630 + 7 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 74172343716 + 17066287044 = 272346^2 + 130638^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (91238630767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7448017 + ... + 7460256.

Almost surely, 2^91238630760 is an apocalyptic number.

91238630760 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91238630760 is an abundant number, since it is smaller than the sum of its proper divisors (222729619680).

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

91238630760 is a wasteful number, since it uses less digits than its factorization.

91238630760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908307 (or 14908300 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 91238630760 in words is "ninety-one billion, two hundred thirty-eight million, six hundred thirty thousand, seven hundred sixty".