12785718771472 has 10 divisors (see below), whose sum is σ = 24772330119758. Its totient is φ = 6392859385728.

The previous prime is 12785718771443. The next prime is 12785718771487. The reversal of 12785718771472 is 27417781758721.

It can be written as a sum of positive squares in only one way, i.e., 12384796793616 + 400921977856 = 3519204^2 + 633184^2 .

It is a super-2 number, since 2×12785718771472² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12785718771398 and 12785718771407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399553711593 + ... + 399553711624.

Almost surely, 2^{12785718771472} is an apocalyptic number.

It is an amenable number.

12785718771472 is a deficient number, since it is larger than the sum of its proper divisors (11986611348286).

12785718771472 is an equidigital number, since it uses as much as digits as its factorization.

12785718771472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799107423225 (or 799107423219 counting only the distinct ones).

The product of its digits is 86051840, while the sum is 67.

The spelling of 12785718771472 in words is "twelve trillion, seven hundred eighty-five billion, seven hundred eighteen million, seven hundred seventy-one thousand, four hundred seventy-two".