12956592403738 has 16 divisors (see below), whose sum is σ = 19974609430344. Its totient is φ = 6298642831680.

The previous prime is 12956592403723. The next prime is 12956592403747. The reversal of 12956592403738 is 83730429565921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12920768135209 + 35824268529 = 3594547^2 + 189273^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12956592403738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63289945 + ... + 63494332.

It is a 2-persistent number, because it is pandigital, and so is 2⋅12956592403738 = 25913184807476, but 3⋅12956592403738 = 38869777211214 is not.

Almost surely, 2^{12956592403738} is an apocalyptic number.

12956592403738 is a deficient number, since it is larger than the sum of its proper divisors (7018017026606).

12956592403738 is a wasteful number, since it uses less digits than its factorization.

12956592403738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126785697.

The product of its (nonzero) digits is 97977600, while the sum is 64.

The spelling of 12956592403738 in words is "twelve trillion, nine hundred fifty-six billion, five hundred ninety-two million, four hundred three thousand, seven hundred thirty-eight".