123226490709 has 18 divisors (see below), whose sum is σ = 207054036150. Its totient is φ = 70415137296.

The previous prime is 123226490701. The next prime is 123226490711. The reversal of 123226490709 is 907094622321.

123226490709 is a `hidden beast` number, since 1 + 232 + 264 + 90 + 70 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95529210084 + 27697280625 = 309078^2 + 166425^2 .

It is not a de Polignac number, because 123226490709 - 2³ = 123226490701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123226490701) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139712134 + ... + 139713015.

Almost surely, 2^123226490709 is an apocalyptic number.

It is an amenable number.

123226490709 is a deficient number, since it is larger than the sum of its proper divisors (83827545441).

123226490709 is a wasteful number, since it uses less digits than its factorization.

123226490709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279425169 (or 279425159 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 123226490709 in words is "one hundred twenty-three billion, two hundred twenty-six million, four hundred ninety thousand, seven hundred nine".