123695122398 has 8 divisors (see below), whose sum is σ = 247390244808. Its totient is φ = 41231707464.

The previous prime is 123695122391. The next prime is 123695122399. The reversal of 123695122398 is 893221596321.

It is a happy number.

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

123695122398 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 123695122398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123695122391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10307926861 + ... + 10307926872.

It is an arithmetic number, because the mean of its divisors is an integer number (30923780601).

Almost surely, 2^123695122398 is an apocalyptic number.

123695122398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123695122398 is a wasteful number, since it uses less digits than its factorization.

123695122398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20615853738.

The product of its digits is 1399680, while the sum is 51.

The spelling of 123695122398 in words is "one hundred twenty-three billion, six hundred ninety-five million, one hundred twenty-two thousand, three hundred ninety-eight".