109890815025924 has 81 divisors (see below), whose sum is σ = 279937191056341. Its totient is φ = 36347925731520.

The previous prime is 109890815025863. The next prime is 109890815025977. The reversal of 109890815025924 is 429520518098901.

The square root of 109890815025924 is 10482882.

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

109890815025924 is a `hidden beast` number, since 10 + 9 + 8 + 90 + 8 + 1 + 502 + 5 + 9 + 24 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30836808548100 + 79054006477824 = 5553090^2 + 8891232^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8239538584 + ... + 8239551920.

Almost surely, 2^{109890815025924} is an apocalyptic number.

109890815025924 is the 10482882-nd square number.

It is an amenable number.

109890815025924 is an abundant number, since it is smaller than the sum of its proper divisors (170046376030417).

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

109890815025924 is an frugal number, since it uses more digits than its factorization.

109890815025924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946 (or 13473 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 109890815025924 in words is "one hundred nine trillion, eight hundred ninety billion, eight hundred fifteen million, twenty-five thousand, nine hundred twenty-four".