122664146617 has 4 divisors (see below), whose sum is σ = 122664905460. Its totient is φ = 122663387776.

The previous prime is 122664146557. The next prime is 122664146713. The reversal of 122664146617 is 716641466221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 716641466221 = 20543 ⋅34884947.

It can be written as a sum of positive squares in 2 ways, for example, as 2571402681 + 120092743936 = 50709^2 + 346544^2 .

It is a cyclic number.

It is not a de Polignac number, because 122664146617 - 2¹¹ = 122664144569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122664141617) 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, 29188 + ... + 496165.

It is an arithmetic number, because the mean of its divisors is an integer number (30666226365).

Almost surely, 2^122664146617 is an apocalyptic number.

It is an amenable number.

122664146617 is a deficient number, since it is larger than the sum of its proper divisors (758843).

122664146617 is an equidigital number, since it uses as much as digits as its factorization.

122664146617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758842.

The product of its digits is 580608, while the sum is 46.

The spelling of 122664146617 in words is "one hundred twenty-two billion, six hundred sixty-four million, one hundred forty-six thousand, six hundred seventeen".