122851619959 has 2 divisors, whose sum is σ = 122851619960. Its totient is φ = 122851619958.

The previous prime is 122851619951. The next prime is 122851620007. The reversal of 122851619959 is 959916158221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122851619959 - 2³ = 122851619951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122851619951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61425809979 + 61425809980.

It is an arithmetic number, because the mean of its divisors is an integer number (61425809980).

Almost surely, 2^122851619959 is an apocalyptic number.

122851619959 is a deficient number, since it is larger than the sum of its proper divisors (1).

122851619959 is an equidigital number, since it uses as much as digits as its factorization.

122851619959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 58.

The spelling of 122851619959 in words is "one hundred twenty-two billion, eight hundred fifty-one million, six hundred nineteen thousand, nine hundred fifty-nine".