122643703550 has 12 divisors (see below), whose sum is σ = 228117288696. Its totient is φ = 49057481400.

The previous prime is 122643703543. The next prime is 122643703577. The reversal of 122643703550 is 55307346221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1226436986 + ... + 1226437085.

It is an arithmetic number, because the mean of its divisors is an integer number (19009774058).

Almost surely, 2^122643703550 is an apocalyptic number.

122643703550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122643703550 is a deficient number, since it is larger than the sum of its proper divisors (105473585146).

122643703550 is a wasteful number, since it uses less digits than its factorization.

122643703550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452874083 (or 2452874078 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 122643703550 in words is "one hundred twenty-two billion, six hundred forty-three million, seven hundred three thousand, five hundred fifty".