90158749423 has 4 divisors (see below), whose sum is σ = 91686863880. Its totient is φ = 88630634968.

The previous prime is 90158749391. The next prime is 90158749453. The reversal of 90158749423 is 32494785109.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90158749423 - 2⁵ = 90158749391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90158749453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764057140 + ... + 764057257.

It is an arithmetic number, because the mean of its divisors is an integer number (22921715970).

Almost surely, 2^90158749423 is an apocalyptic number.

90158749423 is a deficient number, since it is larger than the sum of its proper divisors (1528114457).

90158749423 is a wasteful number, since it uses less digits than its factorization.

90158749423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528114456.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 90158749423 in words is "ninety billion, one hundred fifty-eight million, seven hundred forty-nine thousand, four hundred twenty-three".