91230517386 has 48 divisors (see below), whose sum is σ = 203157886464. Its totient is φ = 29573530272.

The previous prime is 91230517331. The next prime is 91230517393. The reversal of 91230517386 is 68371503219.

91230517386 is a `hidden beast` number, since 9 + 123 + 0 + 517 + 3 + 8 + 6 = 666.

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, 210610 + ... + 476253.

It is an arithmetic number, because the mean of its divisors is an integer number (4232455968).

Almost surely, 2^91230517386 is an apocalyptic number.

91230517386 is an abundant number, since it is smaller than the sum of its proper divisors (111927369078).

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

91230517386 is a wasteful number, since it uses less digits than its factorization.

91230517386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687075 (or 687072 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 91230517386 in words is "ninety-one billion, two hundred thirty million, five hundred seventeen thousand, three hundred eighty-six".