122745721744 has 20 divisors (see below), whose sum is σ = 237825623920. Its totient is φ = 61371367200.

The previous prime is 122745721663. The next prime is 122745721849. The reversal of 122745721744 is 447127547221.

It is a junction number, because it is equal to n+sod(n) for n = 122745721694 and 122745721703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913987 + ... + 1039645.

It is an arithmetic number, because the mean of its divisors is an integer number (11891281196).

Almost surely, 2^122745721744 is an apocalyptic number.

It is an amenable number.

122745721744 is a deficient number, since it is larger than the sum of its proper divisors (115079902176).

122745721744 is a wasteful number, since it uses less digits than its factorization.

122745721744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186718 (or 186712 counting only the distinct ones).

The product of its digits is 878080, while the sum is 46.

The spelling of 122745721744 in words is "one hundred twenty-two billion, seven hundred forty-five million, seven hundred twenty-one thousand, seven hundred forty-four".