13693172128 has 24 divisors (see below), whose sum is σ = 27615958020. Its totient is φ = 6679595520.

The previous prime is 13693172093. The next prime is 13693172137. The reversal of 13693172128 is 82127139631.

It can be written as a sum of positive squares in 2 ways, for example, as 13579707024 + 113465104 = 116532^2 + 10652^2 .

It is a super-4 number, since 4×13693172128⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217123 + ... + 5219746.

Almost surely, 2^13693172128 is an apocalyptic number.

It is an amenable number.

13693172128 is an abundant number, since it is smaller than the sum of its proper divisors (13922785892).

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

13693172128 is a wasteful number, since it uses less digits than its factorization.

13693172128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436920 (or 10436912 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The spelling of 13693172128 in words is "thirteen billion, six hundred ninety-three million, one hundred seventy-two thousand, one hundred twenty-eight".