18678610412 has 24 divisors (see below), whose sum is σ = 40753332480. Its totient is φ = 7277380560.

The previous prime is 18678610399. The next prime is 18678610429. The reversal of 18678610412 is 21401687681.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 7 ways as a sum of consecutive naturals, for example, 30322112 + ... + 30322727.

It is an arithmetic number, because the mean of its divisors is an integer number (1698055520).

Almost surely, 2^18678610412 is an apocalyptic number.

It is an amenable number.

18678610412 is an abundant number, since it is smaller than the sum of its proper divisors (22074722068).

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

18678610412 is a wasteful number, since it uses less digits than its factorization.

18678610412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60644861 (or 60644859 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

Multiplying 18678610412 by its sum of digits (44), we get a palindrome (821858858128).

The spelling of 18678610412 in words is "eighteen billion, six hundred seventy-eight million, six hundred ten thousand, four hundred twelve".