90436761965 has 16 divisors (see below), whose sum is σ = 118449193536. Its totient is φ = 65739273600.

The previous prime is 90436761949. The next prime is 90436762057. The reversal of 90436761965 is 56916763409.

It is not a de Polignac number, because 90436761965 - 2⁴ = 90436761949 is a prime.

It is a super-2 number, since 2×90436761965² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90436761965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300296 + ... + 520625.

It is an arithmetic number, because the mean of its divisors is an integer number (7403074596).

Almost surely, 2^90436761965 is an apocalyptic number.

It is an amenable number.

90436761965 is a deficient number, since it is larger than the sum of its proper divisors (28012431571).

90436761965 is a wasteful number, since it uses less digits than its factorization.

90436761965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822940.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 90436761965 in words is "ninety billion, four hundred thirty-six million, seven hundred sixty-one thousand, nine hundred sixty-five".