123789274568 has 16 divisors (see below), whose sum is σ = 232108848000. Its totient is φ = 61893581776.

The previous prime is 123789274549. The next prime is 123789274573. The reversal of 123789274568 is 865472987321.

It is a Cunningham number, because it is equal to 351837²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 123789274568.

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 3 ways as a sum of consecutive naturals, for example, 615713 + ... + 791631.

It is an arithmetic number, because the mean of its divisors is an integer number (14506803000).

Almost surely, 2^123789274568 is an apocalyptic number.

It is an amenable number.

123789274568 is a deficient number, since it is larger than the sum of its proper divisors (108319573432).

123789274568 is a wasteful number, since it uses less digits than its factorization.

123789274568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263884 (or 263880 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 62.

The spelling of 123789274568 in words is "one hundred twenty-three billion, seven hundred eighty-nine million, two hundred seventy-four thousand, five hundred sixty-eight".