122727742478 has 32 divisors (see below), whose sum is σ = 206297625600. Its totient is φ = 54275880960.

The previous prime is 122727742447. The next prime is 122727742519. The reversal of 122727742478 is 874247727221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9278 + ... + 495521.

It is an arithmetic number, because the mean of its divisors is an integer number (6446800800).

Almost surely, 2^122727742478 is an apocalyptic number.

122727742478 is a deficient number, since it is larger than the sum of its proper divisors (83569883122).

122727742478 is a wasteful number, since it uses less digits than its factorization.

122727742478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505112.

The product of its digits is 4917248, while the sum is 53.

The spelling of 122727742478 in words is "one hundred twenty-two billion, seven hundred twenty-seven million, seven hundred forty-two thousand, four hundred seventy-eight".