20165262016455 has 40 divisors (see below), whose sum is σ = 36156169543824. Its totient is φ = 10752405350400.

The previous prime is 20165262016391. The next prime is 20165262016507. The reversal of 20165262016455 is 55461026256102.

20165262016455 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 5 + 2 + 620 + 16 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 20165262016455 - 2⁶ = 20165262016391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20165262016455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3740961 + ... + 7370570.

Almost surely, 2^{20165262016455} is an apocalyptic number.

20165262016455 is a deficient number, since it is larger than the sum of its proper divisors (15990907527369).

20165262016455 is a wasteful number, since it uses less digits than its factorization.

20165262016455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11116029 (or 11116020 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 20165262016455 in words is "twenty trillion, one hundred sixty-five billion, two hundred sixty-two million, sixteen thousand, four hundred fifty-five".