123989365008 has 40 divisors (see below), whose sum is σ = 355895400800. Its totient is φ = 41329788192.

The previous prime is 123989364977. The next prime is 123989365039. The reversal of 123989365008 is 800563989321.

123989365008 is a `hidden beast` number, since 1 + 23 + 9 + 89 + 36 + 500 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (123989364977) and next prime (123989365039).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 143505778 + ... + 143506641.

It is an arithmetic number, because the mean of its divisors is an integer number (8897385020).

Almost surely, 2^123989365008 is an apocalyptic number.

123989365008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123989365008 is an abundant number, since it is smaller than the sum of its proper divisors (231906035792).

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

123989365008 is a wasteful number, since it uses less digits than its factorization.

123989365008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287012436 (or 287012424 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 123989365008 in words is "one hundred twenty-three billion, nine hundred eighty-nine million, three hundred sixty-five thousand, eight".