20251035553264 has 20 divisors (see below), whose sum is σ = 39244277771440. Its totient is φ = 10123479999360.

The previous prime is 20251035553237. The next prime is 20251035553303. The reversal of 20251035553264 is 46235553015202.

It is a self number, because there is not a number n which added to its sum of digits gives 20251035553264.

It is a congruent number.

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, 127279092 + ... + 127438099.

It is an arithmetic number, because the mean of its divisors is an integer number (1962213888572).

Almost surely, 2^{20251035553264} is an apocalyptic number.

It is an amenable number.

20251035553264 is a deficient number, since it is larger than the sum of its proper divisors (18993242218176).

20251035553264 is a wasteful number, since it uses less digits than its factorization.

20251035553264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254722168 (or 254722162 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 20251035553264 its reverse (46235553015202), we get a palindrome (66486588568466).

The spelling of 20251035553264 in words is "twenty trillion, two hundred fifty-one billion, thirty-five million, five hundred fifty-three thousand, two hundred sixty-four".