123278862100 has 36 divisors (see below), whose sum is σ = 267533493948. Its totient is φ = 49308160000.

The previous prime is 123278862061. The next prime is 123278862127. The reversal of 123278862100 is 1268872321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 40001600016 + 83277262084 = 200004^2 + 288578^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1837140 + ... + 1903060.

It is an arithmetic number, because the mean of its divisors is an integer number (7431485943).

Almost surely, 2^123278862100 is an apocalyptic number.

123278862100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123278862100 is an abundant number, since it is smaller than the sum of its proper divisors (144254631848).

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

123278862100 is a wasteful number, since it uses less digits than its factorization.

123278862100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84636 (or 84629 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 123278862100 in words is "one hundred twenty-three billion, two hundred seventy-eight million, eight hundred sixty-two thousand, one hundred".