13065785877644 has 12 divisors (see below), whose sum is σ = 22865339801304. Its totient is φ = 6532831648704.

The previous prime is 13065785877601. The next prime is 13065785877701. The reversal of 13065785877644 is 44677858756031.

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, 14841197 + ... + 15696900.

It is an arithmetic number, because the mean of its divisors is an integer number (1905444983442).

Almost surely, 2^{13065785877644} is an apocalyptic number.

It is an amenable number.

13065785877644 is a deficient number, since it is larger than the sum of its proper divisors (9799553923660).

13065785877644 is a wasteful number, since it uses less digits than its factorization.

13065785877644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30645064 (or 30645062 counting only the distinct ones).

The product of its (nonzero) digits is 948326400, while the sum is 71.

The spelling of 13065785877644 in words is "thirteen trillion, sixty-five billion, seven hundred eighty-five million, eight hundred seventy-seven thousand, six hundred forty-four".