90885368643 has 16 divisors (see below), whose sum is σ = 123606787200. Its totient is φ = 59383304640.

The previous prime is 90885368597. The next prime is 90885368677. The reversal of 90885368643 is 34686358809.

It is a happy number.

It is not a de Polignac number, because 90885368643 - 2⁹ = 90885368131 is a prime.

It is a super-2 number, since 2×90885368643² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90885368443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717058 + ... + 834231.

It is an arithmetic number, because the mean of its divisors is an integer number (7725424200).

Almost surely, 2^90885368643 is an apocalyptic number.

90885368643 is a deficient number, since it is larger than the sum of its proper divisors (32721418557).

90885368643 is a wasteful number, since it uses less digits than its factorization.

90885368643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551682.

The product of its (nonzero) digits is 29859840, while the sum is 60.

The spelling of 90885368643 in words is "ninety billion, eight hundred eighty-five million, three hundred sixty-eight thousand, six hundred forty-three".