123366465400 has 96 divisors (see below), whose sum is σ = 296212291200. Its totient is φ = 47733350400.

The previous prime is 123366465379. The next prime is 123366465437. The reversal of 123366465400 is 4564663321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27333544 + ... + 27338056.

It is an arithmetic number, because the mean of its divisors is an integer number (3085544700).

Almost surely, 2^123366465400 is an apocalyptic number.

123366465400 is a gapful number since it is divisible by the number (10) 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 123366465400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148106145600).

123366465400 is an abundant number, since it is smaller than the sum of its proper divisors (172845825800).

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

123366465400 is a wasteful number, since it uses less digits than its factorization.

123366465400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969 (or 8960 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 123366465400 in words is "one hundred twenty-three billion, three hundred sixty-six million, four hundred sixty-five thousand, four hundred".