90190019123 has 8 divisors (see below), whose sum is σ = 90670565376. Its totient is φ = 89709560200.

The previous prime is 90190019113. The next prime is 90190019159. The reversal of 90190019123 is 32191009109.

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

It is a cyclic number.

It is not a de Polignac number, because 90190019123 - 2¹⁴ = 90190002739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90190019113) 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, 4036340 + ... + 4058622.

It is an arithmetic number, because the mean of its divisors is an integer number (11333820672).

Almost surely, 2^90190019123 is an apocalyptic number.

90190019123 is a deficient number, since it is larger than the sum of its proper divisors (480546253).

90190019123 is a wasteful number, since it uses less digits than its factorization.

90190019123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43665.

The product of its (nonzero) digits is 4374, while the sum is 35.

The spelling of 90190019123 in words is "ninety billion, one hundred ninety million, nineteen thousand, one hundred twenty-three".