122457850605 has 12 divisors (see below), whose sum is σ = 212260274460. Its totient is φ = 65310853632.

The previous prime is 122457850597. The next prime is 122457850607. The reversal of 122457850605 is 506058754221.

122457850605 is a `hidden beast` number, since 1 + 2 + 24 + 578 + 50 + 6 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41734812681 + 80723037924 = 204291^2 + 284118^2 .

It is not a de Polignac number, because 122457850605 - 2³ = 122457850597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2721285569 = 122457850605 / (1 + 2 + 2 + 4 + 5 + 7 + 8 + 5 + 0 + 6 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122457850607) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1360642740 + ... + 1360642829.

It is an arithmetic number, because the mean of its divisors is an integer number (17688356205).

Almost surely, 2^122457850605 is an apocalyptic number.

122457850605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122457850605 is a deficient number, since it is larger than the sum of its proper divisors (89802423855).

122457850605 is a wasteful number, since it uses less digits than its factorization.

122457850605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721285580 (or 2721285577 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 122457850605 in words is "one hundred twenty-two billion, four hundred fifty-seven million, eight hundred fifty thousand, six hundred five".