20257246955169 has 128 divisors (see below), whose sum is σ = 35742176870400. Its totient is φ = 11095355738880.

The previous prime is 20257246955123. The next prime is 20257246955177. The reversal of 20257246955169 is 96155964275202.

20257246955169 is a `hidden beast` number, since 2 + 0 + 2 + 5 + 7 + 2 + 469 + 5 + 5 + 169 = 666.

It is not a de Polignac number, because 20257246955169 - 2¹⁷ = 20257246824097 is a prime.

It is a super-2 number, since 2×20257246955169² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (20257246935169) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2888524507 + ... + 2888531519.

It is an arithmetic number, because the mean of its divisors is an integer number (279235756800).

Almost surely, 2^{20257246955169} is an apocalyptic number.

It is an amenable number.

20257246955169 is a deficient number, since it is larger than the sum of its proper divisors (15484929915231).

20257246955169 is a wasteful number, since it uses less digits than its factorization.

20257246955169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11692 (or 11686 counting only the distinct ones).

The product of its (nonzero) digits is 81648000, while the sum is 63.

The spelling of 20257246955169 in words is "twenty trillion, two hundred fifty-seven billion, two hundred forty-six million, nine hundred fifty-five thousand, one hundred sixty-nine".