649309654976 has 14 divisors (see below), whose sum is σ = 1288473846720. Its totient is φ = 324654827456.

The previous prime is 649309654963. The next prime is 649309655009. The reversal of 649309654976 is 679456903946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5072731616 + ... + 5072731743.

Almost surely, 2^649309654976 is an apocalyptic number.

It is an amenable number.

649309654976 is a deficient number, since it is larger than the sum of its proper divisors (639164191744).

649309654976 is a wasteful number, since it uses less digits than its factorization.

649309654976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10145463371 (or 10145463361 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 68.

The spelling of 649309654976 in words is "six hundred forty-nine billion, three hundred nine million, six hundred fifty-four thousand, nine hundred seventy-six".