91427637960 has 96 divisors (see below), whose sum is σ = 298154296440. Its totient is φ = 24297464832.

The previous prime is 91427637911. The next prime is 91427637979. The reversal of 91427637960 is 6973672419.

It is a happy number.

91427637960 is a `hidden beast` number, since 9 + 142 + 76 + 379 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 87806727684 + 3620910276 = 296322^2 + 60174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91427637897 and 91427637906.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327909 + ... + 538868.

Almost surely, 2^91427637960 is an apocalyptic number.

91427637960 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91427637960 is an abundant number, since it is smaller than the sum of its proper divisors (206726658480).

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

91427637960 is a wasteful number, since it uses less digits than its factorization.

91427637960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867087 (or 867080 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 91427637960 in words is "ninety-one billion, four hundred twenty-seven million, six hundred thirty-seven thousand, nine hundred sixty".