122665156362 has 144 divisors (see below), whose sum is σ = 327630630600. Its totient is φ = 33013048320.

The previous prime is 122665156331. The next prime is 122665156483. The reversal of 122665156362 is 263651566221.

122665156362 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 6 + 5 + 1 + 5 + 636 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 105936579441 + 16728576921 = 325479^2 + 129339^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 990214 + ... + 1107182.

Almost surely, 2^122665156362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122665156362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163815315300).

122665156362 is an abundant number, since it is smaller than the sum of its proper divisors (204965474238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122665156362 is a wasteful number, since it uses less digits than its factorization.

122665156362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117061 (or 117051 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 122665156362 in words is "one hundred twenty-two billion, six hundred sixty-five million, one hundred fifty-six thousand, three hundred sixty-two".