123800973912 has 256 divisors, whose sum is σ = 437500800000. Its totient is φ = 32155885440.

The previous prime is 123800973911. The next prime is 123800973979. The reversal of 123800973912 is 219379008321.

It is a super-2 number, since 2×123800973912² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123800973911) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 739014 + ... + 890922.

It is an arithmetic number, because the mean of its divisors is an integer number (1708987500).

Almost surely, 2^123800973912 is an apocalyptic number.

123800973912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123800973912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218750400000).

123800973912 is an abundant number, since it is smaller than the sum of its proper divisors (313699826088).

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

123800973912 is a wasteful number, since it uses less digits than its factorization.

123800973912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151956 (or 151932 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 123800973912 in words is "one hundred twenty-three billion, eight hundred million, nine hundred seventy-three thousand, nine hundred twelve".