90029770065 has 24 divisors (see below), whose sum is σ = 156216460608. Its totient is φ = 47965151520.

The previous prime is 90029770057. The next prime is 90029770133. The reversal of 90029770065 is 56007792009.

It is not a de Polignac number, because 90029770065 - 2³ = 90029770057 is a prime.

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 90029770065.

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, 1013701 + ... + 1098930.

It is an arithmetic number, because the mean of its divisors is an integer number (6509019192).

Almost surely, 2^90029770065 is an apocalyptic number.

It is an amenable number.

90029770065 is a deficient number, since it is larger than the sum of its proper divisors (66186690543).

90029770065 is a wasteful number, since it uses less digits than its factorization.

90029770065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113589 (or 2113586 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 90029770065 in words is "ninety billion, twenty-nine million, seven hundred seventy thousand, sixty-five".