12705931776 has 40 divisors (see below), whose sum is σ = 33849400464. Its totient is φ = 4235310080.

The previous prime is 12705931723. The next prime is 12705931787. The reversal of 12705931776 is 67713950721.

It is a super-2 number, since 2×12705931776² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4134510 + ... + 4137581.

Almost surely, 2^12705931776 is an apocalyptic number.

12705931776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12705931776 is an abundant number, since it is smaller than the sum of its proper divisors (21143468688).

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

12705931776 is an frugal number, since it uses more digits than its factorization.

12705931776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272112 (or 8272096 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 48.

The spelling of 12705931776 in words is "twelve billion, seven hundred five million, nine hundred thirty-one thousand, seven hundred seventy-six".