63491999365068 has 48 divisors (see below), whose sum is σ = 148289207463936. Its totient is φ = 21143830190400.

The previous prime is 63491999365049. The next prime is 63491999365073. The reversal of 63491999365068 is 86056399919436.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 63491999364984 and 63491999365002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169050855 + ... + 169426017.

It is an arithmetic number, because the mean of its divisors is an integer number (3089358488832).

Almost surely, 2^{63491999365068} is an apocalyptic number.

It is an amenable number.

63491999365068 is an abundant number, since it is smaller than the sum of its proper divisors (84797208098868).

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

63491999365068 is a wasteful number, since it uses less digits than its factorization.

63491999365068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388574 (or 388572 counting only the distinct ones).

The product of its (nonzero) digits is 2040733440, while the sum is 78.

The spelling of 63491999365068 in words is "sixty-three trillion, four hundred ninety-one billion, nine hundred ninety-nine million, three hundred sixty-five thousand, sixty-eight".