648635682132 has 36 divisors (see below), whose sum is σ = 1639651636896. Its totient is φ = 216205989840.

The previous prime is 648635682127. The next prime is 648635682137. The reversal of 648635682132 is 231286536846.

648635682132 is a `hidden beast` number, since 6 + 4 + 8 + 63 + 568 + 2 + 13 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (648635682127) and next prime (648635682137).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648635682137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1208407 + ... + 1660577.

Almost surely, 2^648635682132 is an apocalyptic number.

It is an amenable number.

648635682132 is an abundant number, since it is smaller than the sum of its proper divisors (991015954764).

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

648635682132 is a wasteful number, since it uses less digits than its factorization.

648635682132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492028 (or 492023 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 648635682132 in words is "six hundred forty-eight billion, six hundred thirty-five million, six hundred eighty-two thousand, one hundred thirty-two".