501225365664 has 48 divisors (see below), whose sum is σ = 1461907319040. Its totient is φ = 167075121600.

The previous prime is 501225365659. The next prime is 501225365689. The reversal of 501225365664 is 466563522105.

501225365664 is a `hidden beast` number, since 5 + 0 + 1 + 2 + 2 + 536 + 56 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290060112 + ... + 290061839.

It is an arithmetic number, because the mean of its divisors is an integer number (30456402480).

Almost surely, 2^501225365664 is an apocalyptic number.

501225365664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

501225365664 is an abundant number, since it is smaller than the sum of its proper divisors (960681953376).

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

501225365664 is a wasteful number, since it uses less digits than its factorization.

501225365664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580121970 (or 580121956 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

Adding to 501225365664 its reverse (466563522105), we get a palindrome (967788887769).

The spelling of 501225365664 in words is "five hundred one billion, two hundred twenty-five million, three hundred sixty-five thousand, six hundred sixty-four".