90363212420 has 24 divisors (see below), whose sum is σ = 204359880984. Its totient is φ = 33364878336.

The previous prime is 90363212413. The next prime is 90363212461. The reversal of 90363212420 is 2421236309.

It can be written as a sum of positive squares in 4 ways, for example, as 1745067076 + 88618145344 = 41774^2 + 297688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173775149 + ... + 173775668.

It is an arithmetic number, because the mean of its divisors is an integer number (8514995041).

Almost surely, 2^90363212420 is an apocalyptic number.

It is an amenable number.

90363212420 is an abundant number, since it is smaller than the sum of its proper divisors (113996668564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90363212420 is a wasteful number, since it uses less digits than its factorization.

90363212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347550839 (or 347550837 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 90363212420 its reverse (2421236309), we get a palindrome (92784448729).

The spelling of 90363212420 in words is "ninety billion, three hundred sixty-three million, two hundred twelve thousand, four hundred twenty".