122736217736 has 64 divisors (see below), whose sum is σ = 257723009280. Its totient is φ = 54318919680.

The previous prime is 122736217691. The next prime is 122736217763. The reversal of 122736217736 is 637712637221.

It is a Harshad number since it is a multiple of its sum of digits (47).

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, 721370 + ... + 875126.

It is an arithmetic number, because the mean of its divisors is an integer number (4026922020).

Almost surely, 2^122736217736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122736217736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128861504640).

122736217736 is an abundant number, since it is smaller than the sum of its proper divisors (134986791544).

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

122736217736 is a wasteful number, since it uses less digits than its factorization.

122736217736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154014 (or 154010 counting only the distinct ones).

The product of its digits is 889056, while the sum is 47.

The spelling of 122736217736 in words is "one hundred twenty-two billion, seven hundred thirty-six million, two hundred seventeen thousand, seven hundred thirty-six".