12138708812560 has 40 divisors (see below), whose sum is σ = 30788179626816. Its totient is φ = 4414075931520.

The previous prime is 12138708812491. The next prime is 12138708812609. The reversal of 12138708812560 is 6521880783121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×12138708812560² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12138708812498 and 12138708812507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6896992764 + ... + 6896994523.

Almost surely, 2^{12138708812560} is an apocalyptic number.

12138708812560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12138708812560 is an abundant number, since it is smaller than the sum of its proper divisors (18649470814256).

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

12138708812560 is a wasteful number, since it uses less digits than its factorization.

12138708812560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13793987311 (or 13793987305 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 12138708812560 in words is "twelve trillion, one hundred thirty-eight billion, seven hundred eight million, eight hundred twelve thousand, five hundred sixty".