90542013604 has 27 divisors (see below), whose sum is σ = 184326246657. Its totient is φ = 38801914704.

The previous prime is 90542013599. The next prime is 90542013619. The reversal of 90542013604 is 40631024509.

It is a happy number.

The square root of 90542013604 is 300902.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7915660900 + 82626352704 = 88970^2 + 287448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90542013604.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4201882 + ... + 4223374.

Almost surely, 2^90542013604 is an apocalyptic number.

90542013604 is the 300902-nd square number.

It is an amenable number.

90542013604 is an abundant number, since it is smaller than the sum of its proper divisors (93784233053).

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

90542013604 is an frugal number, since it uses more digits than its factorization.

90542013604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43004 (or 21502 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 90542013604 in words is "ninety billion, five hundred forty-two million, thirteen thousand, six hundred four".