648434871272 has 32 divisors (see below), whose sum is σ = 1255790714880. Its totient is φ = 313569938880.

The previous prime is 648434871239. The next prime is 648434871283. The reversal of 648434871272 is 272178434846.

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, 373703 + ... + 1198550.

It is an arithmetic number, because the mean of its divisors is an integer number (39243459840).

Almost surely, 2^648434871272 is an apocalyptic number.

648434871272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

648434871272 is a deficient number, since it is larger than the sum of its proper divisors (607355843608).

648434871272 is a wasteful number, since it uses less digits than its factorization.

648434871272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573953 (or 1573949 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 56.

The spelling of 648434871272 in words is "six hundred forty-eight billion, four hundred thirty-four million, eight hundred seventy-one thousand, two hundred seventy-two".