13167265497921 has 16 divisors (see below), whose sum is σ = 19742084819520. Its totient is φ = 8672415828480.

The previous prime is 13167265497857. The next prime is 13167265497937. The reversal of 13167265497921 is 12979456276131.

13167265497921 is a `hidden beast` number, since 1 + 3 + 1 + 67 + 2 + 6 + 549 + 7 + 9 + 21 = 666.

It is not a de Polignac number, because 13167265497921 - 2⁶ = 13167265497857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13167265497941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2937808000 + ... + 2937812481.

It is an arithmetic number, because the mean of its divisors is an integer number (1233880301220).

Almost surely, 2^{13167265497921} is an apocalyptic number.

It is an amenable number.

13167265497921 is a deficient number, since it is larger than the sum of its proper divisors (6574819321599).

13167265497921 is an equidigital number, since it uses as much as digits as its factorization.

13167265497921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5875620573 (or 5875620567 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 13167265497921 in words is "thirteen trillion, one hundred sixty-seven billion, two hundred sixty-five million, four hundred ninety-seven thousand, nine hundred twenty-one".