20502804262287 has 64 divisors (see below), whose sum is σ = 29520549273600. Its totient is φ = 12616553157120.

The previous prime is 20502804262273. The next prime is 20502804262397. The reversal of 20502804262287 is 78226240820502.

It is not a de Polignac number, because 20502804262287 - 2⁷ = 20502804262159 is a prime.

It is a super-4 number, since 4×20502804262287⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502804262687) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3452228764 + ... + 3452234702.

It is an arithmetic number, because the mean of its divisors is an integer number (461258582400).

Almost surely, 2^{20502804262287} is an apocalyptic number.

20502804262287 is a deficient number, since it is larger than the sum of its proper divisors (9017745011313).

20502804262287 is a wasteful number, since it uses less digits than its factorization.

20502804262287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11596.

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 20502804262287 in words is "twenty trillion, five hundred two billion, eight hundred four million, two hundred sixty-two thousand, two hundred eighty-seven".