123142563664 has 40 divisors (see below), whose sum is σ = 243273492000. Its totient is φ = 60367821696.

The previous prime is 123142563631. The next prime is 123142563701. The reversal of 123142563664 is 466365241321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 123142563664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185682 + ... + 529870.

It is an arithmetic number, because the mean of its divisors is an integer number (6081837300).

Almost surely, 2^123142563664 is an apocalyptic number.

It is an amenable number.

123142563664 is a deficient number, since it is larger than the sum of its proper divisors (120130928336).

123142563664 is a wasteful number, since it uses less digits than its factorization.

123142563664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344635 (or 344629 counting only the distinct ones).

The product of its digits is 622080, while the sum is 43.

The spelling of 123142563664 in words is "one hundred twenty-three billion, one hundred forty-two million, five hundred sixty-three thousand, six hundred sixty-four".