648634801360 has 80 divisors (see below), whose sum is σ = 1856093452416. Its totient is φ = 205282220544.

The previous prime is 648634801349. The next prime is 648634801379. The reversal of 648634801360 is 63108436846.

It is a tau number, because it is divible by the number of its divisors (80).

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, 44541814 + ... + 44556373.

Almost surely, 2^648634801360 is an apocalyptic number.

It is an amenable number.

648634801360 is an abundant number, since it is smaller than the sum of its proper divisors (1207458651056).

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

648634801360 is a wasteful number, since it uses less digits than its factorization.

648634801360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89098220 (or 89098214 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 648634801360 in words is "six hundred forty-eight billion, six hundred thirty-four million, eight hundred one thousand, three hundred sixty".