15700826081428 has 18 divisors (see below), whose sum is σ = 28723014068714. Its totient is φ = 7509090733584.

The previous prime is 15700826081399. The next prime is 15700826081429. The reversal of 15700826081428 is 82418062800751.

It can be written as a sum of positive squares in only one way, i.e., 12861203407504 + 2839622673924 = 3586252^2 + 1685118^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15700826081429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3710022951 + ... + 3710027182.

Almost surely, 2^{15700826081428} is an apocalyptic number.

It is an amenable number.

15700826081428 is a deficient number, since it is larger than the sum of its proper divisors (13022187987286).

15700826081428 is a wasteful number, since it uses less digits than its factorization.

15700826081428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420050183 (or 7420050158 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 15700826081428 in words is "fifteen trillion, seven hundred billion, eight hundred twenty-six million, eighty-one thousand, four hundred twenty-eight".