13166959305531 has 8 divisors (see below), whose sum is σ = 17558530185040. Its totient is φ = 8776680648192.

The previous prime is 13166959305527. The next prime is 13166959305583. The reversal of 13166959305531 is 13550395966131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13166959305531 - 2² = 13166959305527 is a prime.

It is a super-2 number, since 2×13166959305531² (a number of 27 digits) contains 22 as substring.

It is the 3628631-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13166959305431) by changing a digit.

It is a nontrivial repunit in base 3628630.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323031766 + ... + 323072523.

It is an arithmetic number, because the mean of its divisors is an integer number (2194816273130).

Almost surely, 2^{13166959305531} is an apocalyptic number.

13166959305531 is a deficient number, since it is larger than the sum of its proper divisors (4391570879509).

13166959305531 is an equidigital number, since it uses as much as digits as its factorization.

13166959305531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646111085.

The product of its (nonzero) digits is 9841500, while the sum is 57.

The spelling of 13166959305531 in words is "thirteen trillion, one hundred sixty-six billion, nine hundred fifty-nine million, three hundred five thousand, five hundred thirty-one".