123365726280 has 96 divisors (see below), whose sum is σ = 401141520000. Its totient is φ = 32880878208.

The previous prime is 123365726261. The next prime is 123365726353. The reversal of 123365726280 is 82627563321.

123365726280 is a `hidden beast` number, since 1 + 2 + 3 + 365 + 7 + 2 + 6 + 280 = 666.

123365726280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 633927 + ... + 805353.

It is an arithmetic number, because the mean of its divisors is an integer number (4178557500).

Almost surely, 2^123365726280 is an apocalyptic number.

123365726280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123365726280 is an abundant number, since it is smaller than the sum of its proper divisors (277775793720).

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

123365726280 is a wasteful number, since it uses less digits than its factorization.

123365726280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173443 (or 173436 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 123365726280 in words is "one hundred twenty-three billion, three hundred sixty-five million, seven hundred twenty-six thousand, two hundred eighty".