648865125416 has 32 divisors (see below), whose sum is σ = 1277604887040. Its totient is φ = 308350181568.

The previous prime is 648865125407. The next prime is 648865125553. The reversal of 648865125416 is 614521568846.

It is a super-2 number, since 2×648865125416² (a number of 24 digits) contains 22 as substring.

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, 11201816 + ... + 11259591.

It is an arithmetic number, because the mean of its divisors is an integer number (39925152720).

Almost surely, 2^648865125416 is an apocalyptic number.

It is an amenable number.

648865125416 is a deficient number, since it is larger than the sum of its proper divisors (628739761624).

648865125416 is a wasteful number, since it uses less digits than its factorization.

648865125416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22461593 (or 22461589 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 56.

The spelling of 648865125416 in words is "six hundred forty-eight billion, eight hundred sixty-five million, one hundred twenty-five thousand, four hundred sixteen".