193217107890913 has 8 divisors (see below), whose sum is σ = 195210773559648. Its totient is φ = 191223477665664.

The previous prime is 193217107890899. The next prime is 193217107891043. The reversal of 193217107890913 is 319098701712391.

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 193217107890913 - 2⁴¹ = 191018084635361 is a prime.

It is a super-2 number, since 2×193217107890913² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193217107860913) 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, 2168670 + ... + 19777192.

It is an arithmetic number, because the mean of its divisors is an integer number (24401346694956).

Almost surely, 2^{193217107890913} is an apocalyptic number.

It is an amenable number.

193217107890913 is a deficient number, since it is larger than the sum of its proper divisors (1993665668735).

193217107890913 is a wasteful number, since it uses less digits than its factorization.

193217107890913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17721743.

The product of its (nonzero) digits is 5143824, while the sum is 61.

The spelling of 193217107890913 in words is "one hundred ninety-three trillion, two hundred seventeen billion, one hundred seven million, eight hundred ninety thousand, nine hundred thirteen".