649359725376 has 56 divisors (see below), whose sum is σ = 1764532696480. Its totient is φ = 210603151872.

The previous prime is 649359725347. The next prime is 649359725389. The reversal of 649359725376 is 673527953946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45696706 + ... + 45710913.

Almost surely, 2^649359725376 is an apocalyptic number.

It is an amenable number.

649359725376 is an abundant number, since it is smaller than the sum of its proper divisors (1115172971104).

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

649359725376 is a wasteful number, since it uses less digits than its factorization.

649359725376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91407671 (or 91407661 counting only the distinct ones).

The product of its digits is 257191200, while the sum is 66.

The spelling of 649359725376 in words is "six hundred forty-nine billion, three hundred fifty-nine million, seven hundred twenty-five thousand, three hundred seventy-six".