122438702255490 has 96 divisors (see below), whose sum is σ = 318868415424000. Its totient is φ = 32596195927680.

The previous prime is 122438702255453. The next prime is 122438702255537. The reversal of 122438702255490 is 94552207834221.

It is a happy number.

122438702255490 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 3 + 8 + 70 + 2 + 25 + 549 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 860240551 + ... + 860382869.

It is an arithmetic number, because the mean of its divisors is an integer number (3321545994000).

Almost surely, 2^{122438702255490} is an apocalyptic number.

122438702255490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122438702255490 is an abundant number, since it is smaller than the sum of its proper divisors (196429713168510).

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

122438702255490 is a wasteful number, since it uses less digits than its factorization.

122438702255490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158112 (or 158109 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 122438702255490 in words is "one hundred twenty-two trillion, four hundred thirty-eight billion, seven hundred two million, two hundred fifty-five thousand, four hundred ninety".