13988395136 has 16 divisors (see below), whose sum is σ = 27867506190. Its totient is φ = 6994197504.

The previous prime is 13988395103. The next prime is 13988395153. The reversal of 13988395136 is 63159388931.

It can be written as a sum of positive squares in only one way, i.e., 10149353536 + 3839041600 = 100744^2 + 61960^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54642041 + ... + 54642296.

Almost surely, 2^13988395136 is an apocalyptic number.

13988395136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13988395136 is a deficient number, since it is larger than the sum of its proper divisors (13879111054).

13988395136 is an equidigital number, since it uses as much as digits as its factorization.

13988395136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109284351 (or 109284339 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 56.

The spelling of 13988395136 in words is "thirteen billion, nine hundred eighty-eight million, three hundred ninety-five thousand, one hundred thirty-six".