12647704559616 has 756 divisors, whose sum is σ = 44120852593272. Its totient is φ = 3610062618624.

The previous prime is 12647704559593. The next prime is 12647704559629. The reversal of 12647704559616 is 61695540774621.

12647704559616 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 7 + 7 + 0 + 4 + 5 + 5 + 9 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (756).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12485393926 + ... + 12485394938.

Almost surely, 2^{12647704559616} is an apocalyptic number.

12647704559616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12647704559616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22060426296636).

12647704559616 is an abundant number, since it is smaller than the sum of its proper divisors (31473148033656).

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

12647704559616 is an frugal number, since it uses more digits than its factorization.

12647704559616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 12647704559616 in words is "twelve trillion, six hundred forty-seven billion, seven hundred four million, five hundred fifty-nine thousand, six hundred sixteen".