90960009591 has 32 divisors (see below), whose sum is σ = 135156289536. Its totient is φ = 53940060000.

The previous prime is 90960009577. The next prime is 90960009607. The reversal of 90960009591 is 19590006909.

It is a happy number.

It is not a de Polignac number, because 90960009591 - 2¹⁸ = 90959747447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90960009591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90960009541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10000956 + ... + 10010046.

It is an arithmetic number, because the mean of its divisors is an integer number (4223634048).

Almost surely, 2^90960009591 is an apocalyptic number.

90960009591 is a deficient number, since it is larger than the sum of its proper divisors (44196279945).

90960009591 is a wasteful number, since it uses less digits than its factorization.

90960009591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15603.

The product of its (nonzero) digits is 196830, while the sum is 48.

The spelling of 90960009591 in words is "ninety billion, nine hundred sixty million, nine thousand, five hundred ninety-one".