13173787066 has 16 divisors (see below), whose sum is σ = 22691691360. Its totient is φ = 5672922480.

The previous prime is 13173787061. The next prime is 13173787069. The reversal of 13173787066 is 66078737131.

It is not an unprimeable number, because it can be changed into a prime (13173787061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15757701 + ... + 15758536.

It is an arithmetic number, because the mean of its divisors is an integer number (1418230710).

Almost surely, 2^13173787066 is an apocalyptic number.

13173787066 is a deficient number, since it is larger than the sum of its proper divisors (9517904294).

13173787066 is a wasteful number, since it uses less digits than its factorization.

13173787066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31516269.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 13173787066 in words is "thirteen billion, one hundred seventy-three million, seven hundred eighty-seven thousand, sixty-six".