664137294458 has 24 divisors (see below), whose sum is σ = 1154458233504. Its totient is φ = 284122904000.

The previous prime is 664137294419. The next prime is 664137294481. The reversal of 664137294458 is 854492731466.

664137294458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 664137294397 and 664137294406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52222118 + ... + 52234833.

It is an arithmetic number, because the mean of its divisors is an integer number (48102426396).

Almost surely, 2^664137294458 is an apocalyptic number.

664137294458 is a deficient number, since it is larger than the sum of its proper divisors (490320939046).

664137294458 is a wasteful number, since it uses less digits than its factorization.

664137294458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104456998 (or 104456981 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 59.

The spelling of 664137294458 in words is "six hundred sixty-four billion, one hundred thirty-seven million, two hundred ninety-four thousand, four hundred fifty-eight".