122625535640 has 128 divisors (see below), whose sum is σ = 301791744000. Its totient is φ = 44670528000.

The previous prime is 122625535639. The next prime is 122625535661. The reversal of 122625535640 is 46535526221.

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 31 ways as a sum of consecutive naturals, for example, 3540326 + ... + 3574794.

It is an arithmetic number, because the mean of its divisors is an integer number (2357748000).

Almost surely, 2^122625535640 is an apocalyptic number.

122625535640 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 122625535640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150895872000).

122625535640 is an abundant number, since it is smaller than the sum of its proper divisors (179166208360).

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

122625535640 is a wasteful number, since it uses less digits than its factorization.

122625535640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34681 (or 34677 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 122625535640 in words is "one hundred twenty-two billion, six hundred twenty-five million, five hundred thirty-five thousand, six hundred forty".