90265431633 has 8 divisors (see below), whose sum is σ = 129611901888. Its totient is φ = 55547957904.

The previous prime is 90265431631. The next prime is 90265431661. The reversal of 90265431633 is 33613456209.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90265431633 - 2¹ = 90265431631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90265431631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157249085 + ... + 1157249162.

It is an arithmetic number, because the mean of its divisors is an integer number (16201487736).

Almost surely, 2^90265431633 is an apocalyptic number.

It is an amenable number.

90265431633 is a deficient number, since it is larger than the sum of its proper divisors (39346470255).

90265431633 is a wasteful number, since it uses less digits than its factorization.

90265431633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314498263.

The product of its (nonzero) digits is 349920, while the sum is 42.

The spelling of 90265431633 in words is "ninety billion, two hundred sixty-five million, four hundred thirty-one thousand, six hundred thirty-three".