123455567888 has 10 divisors (see below), whose sum is σ = 239195162814. Its totient is φ = 61727783936.

The previous prime is 123455567869. The next prime is 123455567891. The reversal of 123455567888 is 888765554321.

It can be written as a sum of positive squares in only one way, i.e., 103779333904 + 19676233984 = 322148^2 + 140272^2 .

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 123455567888.

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 as a sum of consecutive naturals, namely, 3857986481 + ... + 3857986512.

Almost surely, 2^123455567888 is an apocalyptic number.

It is an amenable number.

123455567888 is a deficient number, since it is larger than the sum of its proper divisors (115739594926).

123455567888 is an equidigital number, since it uses as much as digits as its factorization.

123455567888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715973001 (or 7715972995 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 62.

The spelling of 123455567888 in words is "one hundred twenty-three billion, four hundred fifty-five million, five hundred sixty-seven thousand, eight hundred eighty-eight".