13156216066 has 16 divisors (see below), whose sum is σ = 22691882304. Its totient is φ = 5603786064.

The previous prime is 13156216063. The next prime is 13156216069. The reversal of 13156216066 is 66061265131.

It is an interprime number because it is at equal distance from previous prime (13156216063) and next prime (13156216069).

It is not an unprimeable number, because it can be changed into a prime (13156216063) 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, 2880325 + ... + 2884888.

It is an arithmetic number, because the mean of its divisors is an integer number (1418242644).

Almost surely, 2^13156216066 is an apocalyptic number.

13156216066 is a deficient number, since it is larger than the sum of its proper divisors (9535666238).

13156216066 is a wasteful number, since it uses less digits than its factorization.

13156216066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765385.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 13156216066 in words is "thirteen billion, one hundred fifty-six million, two hundred sixteen thousand, sixty-six".