17991414345 has 8 divisors (see below), whose sum is σ = 28786262976. Its totient is φ = 9595420976.

The previous prime is 17991414281. The next prime is 17991414373. The reversal of 17991414345 is 54341419971.

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

It is a cyclic number.

It is not a de Polignac number, because 17991414345 - 2⁶ = 17991414281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17991414294 and 17991414303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599713797 + ... + 599713826.

It is an arithmetic number, because the mean of its divisors is an integer number (3598282872).

Almost surely, 2^17991414345 is an apocalyptic number.

17991414345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17991414345 is a deficient number, since it is larger than the sum of its proper divisors (10794848631).

17991414345 is a wasteful number, since it uses less digits than its factorization.

17991414345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199427631.

The product of its digits is 544320, while the sum is 48.

The spelling of 17991414345 in words is "seventeen billion, nine hundred ninety-one million, four hundred fourteen thousand, three hundred forty-five".