12785724751 has 2 divisors, whose sum is σ = 12785724752. Its totient is φ = 12785724750.

The previous prime is 12785724719. The next prime is 12785724761. The reversal of 12785724751 is 15742758721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12785724751 - 2⁵ = 12785724719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12785724695 and 12785724704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12785724761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392862375 + 6392862376.

It is an arithmetic number, because the mean of its divisors is an integer number (6392862376).

Almost surely, 2^12785724751 is an apocalyptic number.

12785724751 is a deficient number, since it is larger than the sum of its proper divisors (1).

12785724751 is an equidigital number, since it uses as much as digits as its factorization.

12785724751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097600, while the sum is 49.

The spelling of 12785724751 in words is "twelve billion, seven hundred eighty-five million, seven hundred twenty-four thousand, seven hundred fifty-one".