90640616930 has 16 divisors (see below), whose sum is σ = 163454697144. Its totient is φ = 36189227520.

The previous prime is 90640616921. The next prime is 90640616971. The reversal of 90640616930 is 3961604609.

It can be written as a sum of positive squares in 4 ways, for example, as 49060921009 + 41579695921 = 221497^2 + 203911^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8371727 + ... + 8382546.

Almost surely, 2^90640616930 is an apocalyptic number.

90640616930 is a deficient number, since it is larger than the sum of its proper divisors (72814080214).

90640616930 is a wasteful number, since it uses less digits than its factorization.

90640616930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16754821.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 90640616930 in words is "ninety billion, six hundred forty million, six hundred sixteen thousand, nine hundred thirty".