122671626557809 has 4 divisors (see below), whose sum is σ = 140196144637504. Its totient is φ = 105147108478116.

The previous prime is 122671626557789. The next prime is 122671626557861. The reversal of 122671626557809 is 908755626176221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122671626557809 - 2⁷ = 122671626557681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122671626557899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8762259039837 + ... + 8762259039850.

It is an arithmetic number, because the mean of its divisors is an integer number (35049036159376).

Almost surely, 2^{122671626557809} is an apocalyptic number.

It is an amenable number.

122671626557809 is a deficient number, since it is larger than the sum of its proper divisors (17524518079695).

122671626557809 is an equidigital number, since it uses as much as digits as its factorization.

122671626557809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17524518079694.

The product of its (nonzero) digits is 152409600, while the sum is 67.

The spelling of 122671626557809 in words is "one hundred twenty-two trillion, six hundred seventy-one billion, six hundred twenty-six million, five hundred fifty-seven thousand, eight hundred nine".