12860447643 has 12 divisors (see below), whose sum is σ = 18579861768. Its totient is φ = 8571942720.

The previous prime is 12860447641. The next prime is 12860447653. The reversal of 12860447643 is 34674406821.

It is not a de Polignac number, because 12860447643 - 2¹ = 12860447641 is a prime.

It is a super-2 number, since 2×12860447643² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12860447641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91630 + ... + 184707.

It is an arithmetic number, because the mean of its divisors is an integer number (1548321814).

Almost surely, 2^12860447643 is an apocalyptic number.

12860447643 is a deficient number, since it is larger than the sum of its proper divisors (5719414125).

12860447643 is a wasteful number, since it uses less digits than its factorization.

12860447643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281514 (or 281511 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 12860447643 in words is "twelve billion, eight hundred sixty million, four hundred forty-seven thousand, six hundred forty-three".