13171904745 has 8 divisors (see below), whose sum is σ = 21075047616. Its totient is φ = 7025015856.

The previous prime is 13171904741. The next prime is 13171904747. The reversal of 13171904745 is 54740917131.

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

It is not a de Polignac number, because 13171904745 - 2² = 13171904741 is a prime.

It is a super-2 number, since 2×13171904745² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13171904697 and 13171904706.

It is not an unprimeable number, because it can be changed into a prime (13171904741) 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, 439063477 + ... + 439063506.

It is an arithmetic number, because the mean of its divisors is an integer number (2634380952).

Almost surely, 2^13171904745 is an apocalyptic number.

13171904745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13171904745 is a deficient number, since it is larger than the sum of its proper divisors (7903142871).

13171904745 is an equidigital number, since it uses as much as digits as its factorization.

13171904745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878126991.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 13171904745 in words is "thirteen billion, one hundred seventy-one million, nine hundred four thousand, seven hundred forty-five".