13156665332 has 12 divisors (see below), whose sum is σ = 23040241476. Its totient is φ = 6573739200.

The previous prime is 13156665317. The next prime is 13156665343. The reversal of 13156665332 is 23356665131.

It can be written as a sum of positive squares in 2 ways, for example, as 11790919396 + 1365745936 = 108586^2 + 36956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13156665332.

It is a congruent number.

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, 1141919 + ... + 1153382.

It is an arithmetic number, because the mean of its divisors is an integer number (1920020123).

Almost surely, 2^13156665332 is an apocalyptic number.

It is an amenable number.

13156665332 is a deficient number, since it is larger than the sum of its proper divisors (9883576144).

13156665332 is a wasteful number, since it uses less digits than its factorization.

13156665332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296738 (or 2296736 counting only the distinct ones).

The product of its digits is 291600, while the sum is 41.

The spelling of 13156665332 in words is "thirteen billion, one hundred fifty-six million, six hundred sixty-five thousand, three hundred thirty-two".