90493859501 has 4 divisors (see below), whose sum is σ = 90762387612. Its totient is φ = 90225331392.

The previous prime is 90493859441. The next prime is 90493859531. The reversal of 90493859501 is 10595839409.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58791700900 + 31702158601 = 242470^2 + 178051^2 .

It is a cyclic number.

It is not a de Polignac number, because 90493859501 - 2¹⁸ = 90493597357 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 (90493859531) 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, 134263550 + ... + 134264223.

It is an arithmetic number, because the mean of its divisors is an integer number (22690596903).

Almost surely, 2^90493859501 is an apocalyptic number.

It is an amenable number.

90493859501 is a deficient number, since it is larger than the sum of its proper divisors (268528111).

90493859501 is a wasteful number, since it uses less digits than its factorization.

90493859501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268528110.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The spelling of 90493859501 in words is "ninety billion, four hundred ninety-three million, eight hundred fifty-nine thousand, five hundred one".