123345677888 has 56 divisors (see below), whose sum is σ = 250807432344. Its totient is φ = 60150988800.

The previous prime is 123345677869. The next prime is 123345677941. The reversal of 123345677888 is 888776543321.

It can be written as a sum of positive squares in 4 ways, for example, as 1131111424 + 122214566464 = 33632^2 + 349592^2 .

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 123345677888.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16309628 + ... + 16317188.

It is an arithmetic number, because the mean of its divisors is an integer number (4478704149).

Almost surely, 2^123345677888 is an apocalyptic number.

It is an amenable number.

123345677888 is an abundant number, since it is smaller than the sum of its proper divisors (127461754456).

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

123345677888 is an equidigital number, since it uses as much as digits as its factorization.

123345677888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831 (or 13821 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 62.

The spelling of 123345677888 in words is "one hundred twenty-three billion, three hundred forty-five million, six hundred seventy-seven thousand, eight hundred eighty-eight".