90973905715 has 32 divisors (see below), whose sum is σ = 142024098816. Its totient is φ = 54245304960.

The previous prime is 90973905713. The next prime is 90973905721. The reversal of 90973905715 is 51750937909.

It is not a de Polignac number, because 90973905715 - 2¹ = 90973905713 is a prime.

It is a super-2 number, since 2×90973905715² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90973905713) 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, 5128012 + ... + 5145721.

It is an arithmetic number, because the mean of its divisors is an integer number (4438253088).

Almost surely, 2^90973905715 is an apocalyptic number.

90973905715 is a deficient number, since it is larger than the sum of its proper divisors (51050193101).

90973905715 is a wasteful number, since it uses less digits than its factorization.

90973905715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273779.

The product of its (nonzero) digits is 2679075, while the sum is 55.

The spelling of 90973905715 in words is "ninety billion, nine hundred seventy-three million, nine hundred five thousand, seven hundred fifteen".