12865601620370 has 16 divisors (see below), whose sum is σ = 23158123764120. Its totient is φ = 5146231570944.

The previous prime is 12865601620349. The next prime is 12865601620373. The reversal of 12865601620370 is 7302610656821.

It can be written as a sum of positive squares in 4 ways, for example, as 5354970874561 + 7510630745809 = 2314081^2 + 2740553^2 .

It is not an unprimeable number, because it can be changed into a prime (12865601620373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10468994 + ... + 11633186.

Almost surely, 2^{12865601620370} is an apocalyptic number.

12865601620370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12865601620370 is a deficient number, since it is larger than the sum of its proper divisors (10292522143750).

12865601620370 is a wasteful number, since it uses less digits than its factorization.

12865601620370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269309.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 12865601620370 in words is "twelve trillion, eight hundred sixty-five billion, six hundred one million, six hundred twenty thousand, three hundred seventy".