649517930496 has 192 divisors, whose sum is σ = 2037208773600. Its totient is φ = 203770036224.

The previous prime is 649517930461. The next prime is 649517930549. The reversal of 649517930496 is 694039715946.

649517930496 is a `hidden beast` number, since 6 + 4 + 9 + 51 + 7 + 93 + 0 + 496 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

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, 594556 + ... + 1285508.

Almost surely, 2^649517930496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649517930496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018604386800).

649517930496 is an abundant number, since it is smaller than the sum of its proper divisors (1387690843104).

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

649517930496 is a wasteful number, since it uses less digits than its factorization.

649517930496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691001 (or 690975 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 649517930496 in words is "six hundred forty-nine billion, five hundred seventeen million, nine hundred thirty thousand, four hundred ninety-six".