90354850621 has 8 divisors (see below), whose sum is σ = 109336962240. Its totient is φ = 72891307968.

The previous prime is 90354850613. The next prime is 90354850627. The reversal of 90354850621 is 12605845309.

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 90354850621 - 2³ = 90354850613 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 (90354850627) 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, 379642111 + ... + 379642348.

It is an arithmetic number, because the mean of its divisors is an integer number (13667120280).

Almost surely, 2^90354850621 is an apocalyptic number.

It is an amenable number.

90354850621 is a deficient number, since it is larger than the sum of its proper divisors (18982111619).

90354850621 is a wasteful number, since it uses less digits than its factorization.

90354850621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759284483.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 90354850621 in words is "ninety billion, three hundred fifty-four million, eight hundred fifty thousand, six hundred twenty-one".