12657352416 has 24 divisors (see below), whose sum is σ = 33225550344. Its totient is φ = 4219117440.

The previous prime is 12657352381. The next prime is 12657352439. The reversal of 12657352416 is 61425375621.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65923615 + ... + 65923806.

It is an arithmetic number, because the mean of its divisors is an integer number (1384397931).

Almost surely, 2^12657352416 is an apocalyptic number.

12657352416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12657352416 is an abundant number, since it is smaller than the sum of its proper divisors (20568197928).

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

12657352416 is a wasteful number, since it uses less digits than its factorization.

12657352416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131847434 (or 131847426 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The spelling of 12657352416 in words is "twelve billion, six hundred fifty-seven million, three hundred fifty-two thousand, four hundred sixteen".