123254767798 has 8 divisors (see below), whose sum is σ = 194612791320. Its totient is φ = 58383837360.

The previous prime is 123254767763. The next prime is 123254767819. The reversal of 123254767798 is 897767452321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1621773223 + ... + 1621773298.

It is an arithmetic number, because the mean of its divisors is an integer number (24326598915).

Almost surely, 2^123254767798 is an apocalyptic number.

123254767798 is a deficient number, since it is larger than the sum of its proper divisors (71358023522).

123254767798 is a wasteful number, since it uses less digits than its factorization.

123254767798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243546542.

The product of its digits is 35562240, while the sum is 61.

The spelling of 123254767798 in words is "one hundred twenty-three billion, two hundred fifty-four million, seven hundred sixty-seven thousand, seven hundred ninety-eight".