122636612340 has 144 divisors (see below), whose sum is σ = 406433978496. Its totient is φ = 29684793600.

The previous prime is 122636612327. The next prime is 122636612347. The reversal of 122636612340 is 43216636221.

122636612340 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 3 + 6 + 612 + 34 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122636612295 and 122636612304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122636612347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1261929 + ... + 1355631.

It is an arithmetic number, because the mean of its divisors is an integer number (2822458184).

Almost surely, 2^122636612340 is an apocalyptic number.

122636612340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122636612340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203216989248).

122636612340 is an abundant number, since it is smaller than the sum of its proper divisors (283797366156).

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

122636612340 is a wasteful number, since it uses less digits than its factorization.

122636612340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94390 (or 94385 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 122636612340 in words is "one hundred twenty-two billion, six hundred thirty-six million, six hundred twelve thousand, three hundred forty".