90849796570 has 32 divisors (see below), whose sum is σ = 176864727312. Its totient is φ = 33400561152.

The previous prime is 90849796549. The next prime is 90849796619. The reversal of 90849796570 is 7569794809.

It is a Cunningham number, because it is equal to 301413²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 13439533041 + 77410263529 = 115929^2 + 278227^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1469377 + ... + 1529956.

Almost surely, 2^90849796570 is an apocalyptic number.

90849796570 is a deficient number, since it is larger than the sum of its proper divisors (86014930742).

90849796570 is a wasteful number, since it uses less digits than its factorization.

90849796570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999586.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 90849796570 in words is "ninety billion, eight hundred forty-nine million, seven hundred ninety-six thousand, five hundred seventy".