122556613551 has 8 divisors (see below), whose sum is σ = 163696006320. Its totient is φ = 81560814912.

The previous prime is 122556613549. The next prime is 122556613649. The reversal of 122556613551 is 155316655221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122556613551 - 2¹ = 122556613549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122556613051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35896540 + ... + 35899953.

It is an arithmetic number, because the mean of its divisors is an integer number (20462000790).

Almost surely, 2^122556613551 is an apocalyptic number.

122556613551 is a deficient number, since it is larger than the sum of its proper divisors (41139392769).

122556613551 is an equidigital number, since it uses as much as digits as its factorization.

122556613551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71797065.

The product of its digits is 270000, while the sum is 42.

The spelling of 122556613551 in words is "one hundred twenty-two billion, five hundred fifty-six million, six hundred thirteen thousand, five hundred fifty-one".