648999899052 has 24 divisors (see below), whose sum is σ = 1520225451696. Its totient is φ = 215491534848.

The previous prime is 648999899017. The next prime is 648999899057. The reversal of 648999899052 is 250998999846.

It is not an unprimeable number, because it can be changed into a prime (648999899057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105217393 + ... + 105223560.

It is an arithmetic number, because the mean of its divisors is an integer number (63342727154).

Almost surely, 2^648999899052 is an apocalyptic number.

It is an amenable number.

648999899052 is an abundant number, since it is smaller than the sum of its proper divisors (871225552644).

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

648999899052 is a wasteful number, since it uses less digits than its factorization.

648999899052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210441217 (or 210441215 counting only the distinct ones).

The product of its (nonzero) digits is 906992640, while the sum is 78.

The spelling of 648999899052 in words is "six hundred forty-eight billion, nine hundred ninety-nine million, eight hundred ninety-nine thousand, fifty-two".