122644261749 has 8 divisors (see below), whose sum is σ = 167945295520. Its totient is φ = 79553034576.

The previous prime is 122644261739. The next prime is 122644261769. The reversal of 122644261749 is 947162446221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122644261749 - 2¹⁷ = 122644130677 is a prime.

It is a super-2 number, since 2×122644261749² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122644261698 and 122644261707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122644261709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552451519 + ... + 552451740.

It is an arithmetic number, because the mean of its divisors is an integer number (20993161940).

Almost surely, 2^122644261749 is an apocalyptic number.

It is an amenable number.

122644261749 is a deficient number, since it is larger than the sum of its proper divisors (45301033771).

122644261749 is a wasteful number, since it uses less digits than its factorization.

122644261749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104903299.

The product of its digits is 1161216, while the sum is 48.

The spelling of 122644261749 in words is "one hundred twenty-two billion, six hundred forty-four million, two hundred sixty-one thousand, seven hundred forty-nine".