13161566355 has 24 divisors (see below), whose sum is σ = 24496630992. Its totient is φ = 6016715712.

The previous prime is 13161566329. The next prime is 13161566359. The reversal of 13161566355 is 55366516131.

It is not a de Polignac number, because 13161566355 - 2⁷ = 13161566227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13161566359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8952712 + ... + 8954181.

It is an arithmetic number, because the mean of its divisors is an integer number (1020692958).

Almost surely, 2^13161566355 is an apocalyptic number.

13161566355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13161566355 is a deficient number, since it is larger than the sum of its proper divisors (11335064637).

13161566355 is a wasteful number, since it uses less digits than its factorization.

13161566355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17906915 (or 17906908 counting only the distinct ones).

The product of its digits is 243000, while the sum is 42.

The spelling of 13161566355 in words is "thirteen billion, one hundred sixty-one million, five hundred sixty-six thousand, three hundred fifty-five".