122554047681 has 64 divisors (see below), whose sum is σ = 196640720640. Its totient is φ = 74989877760.

The previous prime is 122554047677. The next prime is 122554047701. The reversal of 122554047681 is 186740455221.

122554047681 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 540 + 47 + 68 + 1 = 666.

It is not a de Polignac number, because 122554047681 - 2² = 122554047677 is a prime.

It is a super-2 number, since 2×122554047681² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122554047601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60459790 + ... + 60461816.

It is an arithmetic number, because the mean of its divisors is an integer number (3072511260).

Almost surely, 2^122554047681 is an apocalyptic number.

It is an amenable number.

122554047681 is a deficient number, since it is larger than the sum of its proper divisors (74086672959).

122554047681 is a wasteful number, since it uses less digits than its factorization.

122554047681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 122554047681 in words is "one hundred twenty-two billion, five hundred fifty-four million, forty-seven thousand, six hundred eighty-one".