20637116220264 has 16 divisors (see below), whose sum is σ = 51592790550720. Its totient is φ = 6879038740080.

The previous prime is 20637116220257. The next prime is 20637116220277. The reversal of 20637116220264 is 46202261173602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429939921232 + ... + 429939921279.

It is an arithmetic number, because the mean of its divisors is an integer number (3224549409420).

Almost surely, 2^{20637116220264} is an apocalyptic number.

20637116220264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20637116220264 is an abundant number, since it is smaller than the sum of its proper divisors (30955674330456).

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

20637116220264 is a wasteful number, since it uses less digits than its factorization.

20637116220264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859879842520 (or 859879842516 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

Adding to 20637116220264 its reverse (46202261173602), we get a palindrome (66839377393866).

The spelling of 20637116220264 in words is "twenty trillion, six hundred thirty-seven billion, one hundred sixteen million, two hundred twenty thousand, two hundred sixty-four".