122806555405 has 16 divisors (see below), whose sum is σ = 147935113200. Its totient is φ = 97867284480.

The previous prime is 122806555369. The next prime is 122806555409. The reversal of 122806555405 is 504555608221.

It can be written as a sum of positive squares in 8 ways, for example, as 14888392324 + 107918163081 = 122018^2 + 328509^2 .

It is not a de Polignac number, because 122806555405 - 2¹¹ = 122806553357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122806555409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5790661 + ... + 5811829.

It is an arithmetic number, because the mean of its divisors is an integer number (9245944575).

Almost surely, 2^122806555405 is an apocalyptic number.

It is an amenable number.

122806555405 is a deficient number, since it is larger than the sum of its proper divisors (25128557795).

122806555405 is a wasteful number, since it uses less digits than its factorization.

122806555405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25584.

The product of its (nonzero) digits is 480000, while the sum is 43.

The spelling of 122806555405 in words is "one hundred twenty-two billion, eight hundred six million, five hundred fifty-five thousand, four hundred five".