13933139652 has 18 divisors (see below), whose sum is σ = 35219880878. Its totient is φ = 4644379872.

The previous prime is 13933139579. The next prime is 13933139653. The reversal of 13933139652 is 25693133931.

It can be written as a sum of positive squares in only one way, i.e., 10238201856 + 3694937796 = 101184^2 + 60786^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×13933139652² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13933139598 and 13933139607.

It is not an unprimeable number, because it can be changed into a prime (13933139653) 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, 193515793 + ... + 193515864.

Almost surely, 2^13933139652 is an apocalyptic number.

13933139652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13933139652 is an abundant number, since it is smaller than the sum of its proper divisors (21286741226).

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

13933139652 is a wasteful number, since it uses less digits than its factorization.

13933139652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387031667 (or 387031662 counting only the distinct ones).

The product of its digits is 393660, while the sum is 45.

The spelling of 13933139652 in words is "thirteen billion, nine hundred thirty-three million, one hundred thirty-nine thousand, six hundred fifty-two".