13691774148 has 48 divisors (see below), whose sum is σ = 36215766720. Its totient is φ = 3991123584.

The previous prime is 13691774099. The next prime is 13691774149. The reversal of 13691774148 is 84147719631.

It is a super-2 number, since 2×13691774148² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13691774148.

It is not an unprimeable number, because it can be changed into a prime (13691774149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306715 + ... + 2312642.

It is an arithmetic number, because the mean of its divisors is an integer number (754495140).

Almost surely, 2^13691774148 is an apocalyptic number.

It is an amenable number.

13691774148 is an abundant number, since it is smaller than the sum of its proper divisors (22523992572).

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

13691774148 is a wasteful number, since it uses less digits than its factorization.

13691774148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619396 (or 4619394 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The spelling of 13691774148 in words is "thirteen billion, six hundred ninety-one million, seven hundred seventy-four thousand, one hundred forty-eight".