123198412813 has 8 divisors (see below), whose sum is σ = 146919846528. Its totient is φ = 101007394224.

The previous prime is 123198412759. The next prime is 123198412847. The reversal of 123198412813 is 318214891321.

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 123198412813 - 2¹⁷ = 123198281741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123198412813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123198412853) 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, 382603606 + ... + 382603927.

It is an arithmetic number, because the mean of its divisors is an integer number (18364980816).

Almost surely, 2^123198412813 is an apocalyptic number.

It is an amenable number.

123198412813 is a deficient number, since it is larger than the sum of its proper divisors (23721433715).

123198412813 is an equidigital number, since it uses as much as digits as its factorization.

123198412813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765207563.

The product of its digits is 82944, while the sum is 43.

The spelling of 123198412813 in words is "one hundred twenty-three billion, one hundred ninety-eight million, four hundred twelve thousand, eight hundred thirteen".