91407450555 has 24 divisors (see below), whose sum is σ = 160348498128. Its totient is φ = 48163281216.

The previous prime is 91407450523. The next prime is 91407450583. The reversal of 91407450555 is 55505470419.

It is a happy number.

91407450555 is a `hidden beast` number, since 9 + 1 + 40 + 7 + 4 + 50 + 555 = 666.

It is not a de Polignac number, because 91407450555 - 2⁵ = 91407450523 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 91407450555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12232872 + ... + 12240341.

It is an arithmetic number, because the mean of its divisors is an integer number (6681187422).

Almost surely, 2^91407450555 is an apocalyptic number.

91407450555 is a deficient number, since it is larger than the sum of its proper divisors (68941047573).

91407450555 is a wasteful number, since it uses less digits than its factorization.

91407450555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24473307 (or 24473304 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The spelling of 91407450555 in words is "ninety-one billion, four hundred seven million, four hundred fifty thousand, five hundred fifty-five".