123782873780 has 24 divisors (see below), whose sum is σ = 263234469120. Its totient is φ = 48886400160.

The previous prime is 123782873761. The next prime is 123782873783. The reversal of 123782873780 is 87378287321.

It is a super-2 number, since 2×123782873780² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123782873783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39170216 + ... + 39173375.

It is an arithmetic number, because the mean of its divisors is an integer number (10968102880).

Almost surely, 2^123782873780 is an apocalyptic number.

123782873780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123782873780 is an abundant number, since it is smaller than the sum of its proper divisors (139451595340).

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

123782873780 is a wasteful number, since it uses less digits than its factorization.

123782873780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78343679 (or 78343677 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 56.

The spelling of 123782873780 in words is "one hundred twenty-three billion, seven hundred eighty-two million, eight hundred seventy-three thousand, seven hundred eighty".