648279972846 has 36 divisors (see below), whose sum is σ = 1543906441896. Its totient is φ = 196448475960.

The previous prime is 648279972841. The next prime is 648279972869.

648279972846 is a `hidden beast` number, since 6 + 482 + 79 + 9 + 72 + 8 + 4 + 6 = 666.

648279972846 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648279972841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 148822426 + ... + 148826781.

Almost surely, 2^648279972846 is an apocalyptic number.

648279972846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

648279972846 is an abundant number, since it is smaller than the sum of its proper divisors (895626469050).

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

648279972846 is a wasteful number, since it uses less digits than its factorization.

648279972846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297649237 (or 297649223 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 72.

The spelling of 648279972846 in words is "six hundred forty-eight billion, two hundred seventy-nine million, nine hundred seventy-two thousand, eight hundred forty-six".