649548215232 has 112 divisors (see below), whose sum is σ = 1964523002112. Its totient is φ = 185546188800.

The previous prime is 649548215219. The next prime is 649548215263. The reversal of 649548215232 is 232512845946.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×649548215232² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6675732 + ... + 6772332.

Almost surely, 2^649548215232 is an apocalyptic number.

It is an amenable number.

649548215232 is an abundant number, since it is smaller than the sum of its proper divisors (1314974786880).

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

649548215232 is a wasteful number, since it uses less digits than its factorization.

649548215232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101626 (or 101616 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The spelling of 649548215232 in words is "six hundred forty-nine billion, five hundred forty-eight million, two hundred fifteen thousand, two hundred thirty-two".