13656745412 has 6 divisors (see below), whose sum is σ = 23899304478. Its totient is φ = 6828372704.

The previous prime is 13656745409. The next prime is 13656745423. The reversal of 13656745412 is 21454765631.

It can be written as a sum of positive squares in only one way, i.e., 10163462596 + 3493282816 = 100814^2 + 59104^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1707093173 + ... + 1707093180.

It is an arithmetic number, because the mean of its divisors is an integer number (3983217413).

Almost surely, 2^13656745412 is an apocalyptic number.

It is an amenable number.

13656745412 is a deficient number, since it is larger than the sum of its proper divisors (10242559066).

13656745412 is a wasteful number, since it uses less digits than its factorization.

13656745412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414186357 (or 3414186355 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The spelling of 13656745412 in words is "thirteen billion, six hundred fifty-six million, seven hundred forty-five thousand, four hundred twelve".