13161235924 has 6 divisors (see below), whose sum is σ = 23032162874. Its totient is φ = 6580617960.

The previous prime is 13161235897. The next prime is 13161235939. The reversal of 13161235924 is 42953216131.

It can be written as a sum of positive squares in only one way, i.e., 13149208900 + 12027024 = 114670^2 + 3468^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645154487 + ... + 1645154494.

Almost surely, 2^13161235924 is an apocalyptic number.

It is an amenable number.

13161235924 is a deficient number, since it is larger than the sum of its proper divisors (9870926950).

13161235924 is a wasteful number, since it uses less digits than its factorization.

13161235924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290308985 (or 3290308983 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The spelling of 13161235924 in words is "thirteen billion, one hundred sixty-one million, two hundred thirty-five thousand, nine hundred twenty-four".