13578565412 has 6 divisors (see below), whose sum is σ = 23762489478. Its totient is φ = 6789282704.

The previous prime is 13578565381. The next prime is 13578565421. The reversal of 13578565412 is 21456587531.

It can be written as a sum of positive squares in only one way, i.e., 11326493476 + 2252071936 = 106426^2 + 47456^2 .

It is a super-3 number, since 3×13578565412³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1697320673 + ... + 1697320680.

It is an arithmetic number, because the mean of its divisors is an integer number (3960414913).

Almost surely, 2^13578565412 is an apocalyptic number.

It is an amenable number.

13578565412 is a deficient number, since it is larger than the sum of its proper divisors (10183924066).

13578565412 is a wasteful number, since it uses less digits than its factorization.

13578565412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394641357 (or 3394641355 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 47.

The spelling of 13578565412 in words is "thirteen billion, five hundred seventy-eight million, five hundred sixty-five thousand, four hundred twelve".