12770871345 has 64 divisors (see below), whose sum is σ = 23395207680. Its totient is φ = 6604934400.

The previous prime is 12770871341. The next prime is 12770871389. The reversal of 12770871345 is 54317807721.

It is not a de Polignac number, because 12770871345 - 2² = 12770871341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12770871345.

It is not an unprimeable number, because it can be changed into a prime (12770871341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1549335 + ... + 1557555.

It is an arithmetic number, because the mean of its divisors is an integer number (365550120).

Almost surely, 2^12770871345 is an apocalyptic number.

12770871345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12770871345 is a deficient number, since it is larger than the sum of its proper divisors (10624336335).

12770871345 is a wasteful number, since it uses less digits than its factorization.

12770871345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8583 (or 8577 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The spelling of 12770871345 in words is "twelve billion, seven hundred seventy million, eight hundred seventy-one thousand, three hundred forty-five".