13006705172 has 6 divisors (see below), whose sum is σ = 22761734058. Its totient is φ = 6503352584.

The previous prime is 13006705169. The next prime is 13006705181. The reversal of 13006705172 is 27150760031.

It can be written as a sum of positive squares in only one way, i.e., 9573448336 + 3433256836 = 97844^2 + 58594^2 .

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, 1625838143 + ... + 1625838150.

It is an arithmetic number, because the mean of its divisors is an integer number (3793622343).

Almost surely, 2^13006705172 is an apocalyptic number.

It is an amenable number.

13006705172 is a deficient number, since it is larger than the sum of its proper divisors (9755028886).

13006705172 is a wasteful number, since it uses less digits than its factorization.

13006705172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251676297 (or 3251676295 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The spelling of 13006705172 in words is "thirteen billion, six million, seven hundred five thousand, one hundred seventy-two".