13245116566 has 16 divisors (see below), whose sum is σ = 21677725440. Its totient is φ = 6019424680.

The previous prime is 13245116561. The next prime is 13245116567. The reversal of 13245116566 is 66561154231.

It is a happy number.

It is a super-2 number, since 2×13245116566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245116561) 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, 78135 + ... + 180541.

It is an arithmetic number, because the mean of its divisors is an integer number (1354857840).

Almost surely, 2^13245116566 is an apocalyptic number.

13245116566 is a deficient number, since it is larger than the sum of its proper divisors (8432608874).

13245116566 is a wasteful number, since it uses less digits than its factorization.

13245116566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108299.

The product of its digits is 129600, while the sum is 40.

The spelling of 13245116566 in words is "thirteen billion, two hundred forty-five million, one hundred sixteen thousand, five hundred sixty-six".