646107274848 has 72 divisors (see below), whose sum is σ = 1972934728632. Its totient is φ = 184602077184.

The previous prime is 646107274843. The next prime is 646107274889. The reversal of 646107274848 is 848472701646.

It is a super-2 number, since 2×646107274848² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646107274843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68671665 + ... + 68681072.

It is an arithmetic number, because the mean of its divisors is an integer number (27401871231).

Almost surely, 2^646107274848 is an apocalyptic number.

It is an amenable number.

646107274848 is an abundant number, since it is smaller than the sum of its proper divisors (1326827453784).

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

646107274848 is a wasteful number, since it uses less digits than its factorization.

646107274848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137352764 (or 137352749 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 57.

It can be divided in two parts, 6461072 and 74848, that added together give a triangular number (6535920 = T₃₆₁₅).

The spelling of 646107274848 in words is "six hundred forty-six billion, one hundred seven million, two hundred seventy-four thousand, eight hundred forty-eight".