122444615623842 has 128 divisors (see below), whose sum is σ = 277121201011200. Its totient is φ = 40568722629120.

The previous prime is 122444615623817. The next prime is 122444615623843. The reversal of 122444615623842 is 248326516444221.

122444615623842 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 4 + 4 + 6 + 1 + 5 + 623 + 8 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (122444615623843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1596808459 + ... + 1596885137.

It is an arithmetic number, because the mean of its divisors is an integer number (2165009382900).

Almost surely, 2^{122444615623842} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122444615623842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138560600505600).

122444615623842 is an abundant number, since it is smaller than the sum of its proper divisors (154676585387358).

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

122444615623842 is an equidigital number, since it uses as much as digits as its factorization.

122444615623842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78900 (or 78882 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 54.

The spelling of 122444615623842 in words is "one hundred twenty-two trillion, four hundred forty-four billion, six hundred fifteen million, six hundred twenty-three thousand, eight hundred forty-two".