12747322840 has 64 divisors (see below), whose sum is σ = 34707009600. Its totient is φ = 4113420288.

The previous prime is 12747322807. The next prime is 12747322859. The reversal of 12747322840 is 4822374721.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12747322793 and 12747322802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1334245 + ... + 1343764.

It is an arithmetic number, because the mean of its divisors is an integer number (542297025).

Almost surely, 2^12747322840 is an apocalyptic number.

12747322840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12747322840 is an abundant number, since it is smaller than the sum of its proper divisors (21959686760).

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

12747322840 is a wasteful number, since it uses less digits than its factorization.

12747322840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678044 (or 2678040 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 12747322840 in words is "twelve billion, seven hundred forty-seven million, three hundred twenty-two thousand, eight hundred forty".