12956740740 has 72 divisors (see below), whose sum is σ = 41614012440. Its totient is φ = 3251887104.

The previous prime is 12956740711. The next prime is 12956740751. The reversal of 12956740740 is 4704765921.

12956740740 is a `hidden beast` number, since 1 + 2 + 9 + 567 + 40 + 7 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2572315524 + 10384425216 = 50718^2 + 101904^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2114055 + ... + 2120174.

It is an arithmetic number, because the mean of its divisors is an integer number (577972395).

Almost surely, 2^12956740740 is an apocalyptic number.

12956740740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12956740740 is an abundant number, since it is smaller than the sum of its proper divisors (28657271700).

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

12956740740 is a wasteful number, since it uses less digits than its factorization.

12956740740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234261 (or 4234256 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 12956740740 in words is "twelve billion, nine hundred fifty-six million, seven hundred forty thousand, seven hundred forty".