123707989900 has 36 divisors (see below), whose sum is σ = 292850553240. Its totient is φ = 44984723200.

The previous prime is 123707989891. The next prime is 123707989939. The reversal of 123707989900 is 9989707321.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56229805 + ... + 56232004.

It is an arithmetic number, because the mean of its divisors is an integer number (8134737590).

Almost surely, 2^123707989900 is an apocalyptic number.

123707989900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123707989900 is an abundant number, since it is smaller than the sum of its proper divisors (169142563340).

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

123707989900 is a wasteful number, since it uses less digits than its factorization.

123707989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112461834 (or 112461827 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 55.

The spelling of 123707989900 in words is "one hundred twenty-three billion, seven hundred seven million, nine hundred eighty-nine thousand, nine hundred".