90615397100944 has 45 divisors (see below), whose sum is σ = 180443445298977. Its totient is φ = 44082480773952.

The previous prime is 90615397100941. The next prime is 90615397100951. The reversal of 90615397100944 is 44900179351609.

The square root of 90615397100944 is 9519212.

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., 81083901715600 + 9531495385344 = 9004660^2 + 3087312^2 .

It is a super-2 number, since 2×90615397100944² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90615397100941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1408811217 + ... + 1408875535.

Almost surely, 2^{90615397100944} is an apocalyptic number.

90615397100944 is the 9519212-nd square number.

It is an amenable number.

90615397100944 is a deficient number, since it is larger than the sum of its proper divisors (89828048198033).

90615397100944 is an frugal number, since it uses more digits than its factorization.

90615397100944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128720 (or 64358 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 90615397100944 in words is "ninety trillion, six hundred fifteen billion, three hundred ninety-seven million, one hundred thousand, nine hundred forty-four".