90198774849370 has 64 divisors (see below), whose sum is σ = 179111562854400. Its totient is φ = 32430317032960.

The previous prime is 90198774849367. The next prime is 90198774849371. The reversal of 90198774849370 is 7394847789109.

It is not an unprimeable number, because it can be changed into a prime (90198774849371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 707449767 + ... + 707577253.

It is an arithmetic number, because the mean of its divisors is an integer number (2798618169600).

Almost surely, 2^{90198774849370} is an apocalyptic number.

90198774849370 is a deficient number, since it is larger than the sum of its proper divisors (88912788005030).

90198774849370 is a wasteful number, since it uses less digits than its factorization.

90198774849370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199863.

The product of its (nonzero) digits is 768144384, while the sum is 76.

The spelling of 90198774849370 in words is "ninety trillion, one hundred ninety-eight billion, seven hundred seventy-four million, eight hundred forty-nine thousand, three hundred seventy".