122445557790 has 32 divisors (see below), whose sum is σ = 311155771680. Its totient is φ = 30731433984.

The previous prime is 122445557771. The next prime is 122445557803. The reversal of 122445557790 is 97755544221.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120044155 + ... + 120045174.

It is an arithmetic number, because the mean of its divisors is an integer number (9723617865).

Almost surely, 2^122445557790 is an apocalyptic number.

122445557790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122445557790 is an abundant number, since it is smaller than the sum of its proper divisors (188710213890).

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

122445557790 is a wasteful number, since it uses less digits than its factorization.

122445557790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240089356.

The product of its (nonzero) digits is 3528000, while the sum is 51.

The spelling of 122445557790 in words is "one hundred twenty-two billion, four hundred forty-five million, five hundred fifty-seven thousand, seven hundred ninety".