18628668846078 has 16 divisors (see below), whose sum is σ = 37258101388416. Its totient is φ = 6209428999320.

The previous prime is 18628668846061. The next prime is 18628668846133. The reversal of 18628668846078 is 87064886682681.

It is a junction number, because it is equal to n+sod(n) for n = 18628668845994 and 18628668846012.

It is a congruent number.

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, 31503328 + ... + 32089203.

It is an arithmetic number, because the mean of its divisors is an integer number (2328631336776).

Almost surely, 2^{18628668846078} is an apocalyptic number.

18628668846078 is an abundant number, since it is smaller than the sum of its proper divisors (18629432542338).

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

18628668846078 is a wasteful number, since it uses less digits than its factorization.

18628668846078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63641359.

The product of its (nonzero) digits is 2378170368, while the sum is 78.

The spelling of 18628668846078 in words is "eighteen trillion, six hundred twenty-eight billion, six hundred sixty-eight million, eight hundred forty-six thousand, seventy-eight".