122664172077 has 12 divisors (see below), whose sum is σ = 177237533980. Its totient is φ = 81750290688.

The previous prime is 122664172067. The next prime is 122664172153. The reversal of 122664172077 is 770271466221.

122664172077 is a `hidden beast` number, since 1 + 2 + 26 + 6 + 417 + 207 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84161491236 + 38502680841 = 290106^2 + 196221^2 .

It is not a de Polignac number, because 122664172077 - 2¹¹ = 122664170029 is a prime.

It is a super-2 number, since 2×122664172077² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122664172067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2121898 + ... + 2178939.

Almost surely, 2^122664172077 is an apocalyptic number.

It is an amenable number.

122664172077 is a deficient number, since it is larger than the sum of its proper divisors (54573361903).

122664172077 is a wasteful number, since it uses less digits than its factorization.

122664172077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304012 (or 4304009 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 122664172077 in words is "one hundred twenty-two billion, six hundred sixty-four million, one hundred seventy-two thousand, seventy-seven".