90163601123 has 4 divisors (see below), whose sum is σ = 90165260640. Its totient is φ = 90161941608.

The previous prime is 90163601089. The next prime is 90163601137. The reversal of 90163601123 is 32110636109.

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

It is a cyclic number.

It is not a de Polignac number, because 90163601123 - 2²² = 90159406819 is a prime.

It is a super-2 number, since 2×90163601123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90163601123.

It is not an unprimeable number, because it can be changed into a prime (90163601173) by changing a digit.

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, 745403 + ... + 857876.

It is an arithmetic number, because the mean of its divisors is an integer number (22541315160).

Almost surely, 2^90163601123 is an apocalyptic number.

90163601123 is a deficient number, since it is larger than the sum of its proper divisors (1659517).

90163601123 is a wasteful number, since it uses less digits than its factorization.

90163601123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659516.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 90163601123 in words is "ninety billion, one hundred sixty-three million, six hundred one thousand, one hundred twenty-three".