18865592650116 has 45 divisors (see below), whose sum is σ = 49318590108711. Its totient is φ = 6288504822648.

The previous prime is 18865592650063. The next prime is 18865592650171. The reversal of 18865592650116 is 61105629556881.

The square root of 18865592650116 is 4343454.

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

18865592650116 is a `hidden beast` number, since 1 + 8 + 8 + 6 + 559 + 2 + 65 + 0 + 1 + 16 = 666.

It is a super-2 number, since 2×18865592650116² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 78061521 + ... + 78302823.

Almost surely, 2^{18865592650116} is an apocalyptic number.

18865592650116 is the 4343454-th square number.

It is an amenable number.

18865592650116 is an abundant number, since it is smaller than the sum of its proper divisors (30452997458595).

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

18865592650116 is an frugal number, since it uses more digits than its factorization.

18865592650116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482622 (or 241308 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 63.

The spelling of 18865592650116 in words is "eighteen trillion, eight hundred sixty-five billion, five hundred ninety-two million, six hundred fifty thousand, one hundred sixteen".