90031005695 has 4 divisors (see below), whose sum is σ = 108037206840. Its totient is φ = 72024804552.

The previous prime is 90031005689. The next prime is 90031005751. The reversal of 90031005695 is 59650013009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59650013009 = 217727 ⋅273967.

It is a cyclic number.

It is not a de Polignac number, because 90031005695 - 2⁴ = 90031005679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9003100565 + ... + 9003100574.

It is an arithmetic number, because the mean of its divisors is an integer number (27009301710).

Almost surely, 2^90031005695 is an apocalyptic number.

90031005695 is a deficient number, since it is larger than the sum of its proper divisors (18006201145).

90031005695 is a wasteful number, since it uses less digits than its factorization.

90031005695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18006201144.

The product of its (nonzero) digits is 36450, while the sum is 38.

The spelling of 90031005695 in words is "ninety billion, thirty-one million, five thousand, six hundred ninety-five".