123315974380 has 48 divisors (see below), whose sum is σ = 260257536000. Its totient is φ = 49080253376.

The previous prime is 123315974293. The next prime is 123315974393. The reversal of 123315974380 is 83479513321.

It is a self number, because there is not a number n which added to its sum of digits gives 123315974380.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6295041 + ... + 6314599.

It is an arithmetic number, because the mean of its divisors is an integer number (5422032000).

Almost surely, 2^123315974380 is an apocalyptic number.

123315974380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123315974380 is an abundant number, since it is smaller than the sum of its proper divisors (136941561620).

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

123315974380 is a wasteful number, since it uses less digits than its factorization.

123315974380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126 (or 21124 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 123315974380 in words is "one hundred twenty-three billion, three hundred fifteen million, nine hundred seventy-four thousand, three hundred eighty".