123999902208 has 1080 divisors, whose sum is σ = 473737616352. Its totient is φ = 30553915392.

The previous prime is 123999902207. The next prime is 123999902227. The reversal of 123999902208 is 802209999321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123999902207) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2883718635 + ... + 2883718677.

Almost surely, 2^123999902208 is an apocalyptic number.

123999902208 is a gapful number since it is divisible by the number (18) 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 123999902208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236868808176).

123999902208 is an abundant number, since it is smaller than the sum of its proper divisors (349737714144).

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

123999902208 is a wasteful number, since it uses less digits than its factorization.

123999902208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 123999902208 in words is "one hundred twenty-three billion, nine hundred ninety-nine million, nine hundred two thousand, two hundred eight".