649824618992 has 40 divisors (see below), whose sum is σ = 1316626043040. Its totient is φ = 310111450880.

The previous prime is 649824618901. The next prime is 649824619043. The reversal of 649824618992 is 299816428946.

It is a congruent number.

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, 1745567 + ... + 2084862.

It is an arithmetic number, because the mean of its divisors is an integer number (32915651076).

Almost surely, 2^649824618992 is an apocalyptic number.

It is an amenable number.

649824618992 is an abundant number, since it is smaller than the sum of its proper divisors (666801424048).

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

649824618992 is a wasteful number, since it uses less digits than its factorization.

649824618992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830921 (or 3830915 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 68.

The spelling of 649824618992 in words is "six hundred forty-nine billion, eight hundred twenty-four million, six hundred eighteen thousand, nine hundred ninety-two".