123126625500 has 96 divisors (see below), whose sum is σ = 362095126848. Its totient is φ = 32508640000.

The previous prime is 123126625487. The next prime is 123126625511. The reversal of 123126625500 is 5526621321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254859 + ... + 557858.

It is an arithmetic number, because the mean of its divisors is an integer number (3771824238).

Almost surely, 2^123126625500 is an apocalyptic number.

123126625500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123126625500 is an abundant number, since it is smaller than the sum of its proper divisors (238968501348).

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

123126625500 is a wasteful number, since it uses less digits than its factorization.

123126625500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812840 (or 812828 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 123126625500 in words is "one hundred twenty-three billion, one hundred twenty-six million, six hundred twenty-five thousand, five hundred".