18678756924361 has 16 divisors (see below), whose sum is σ = 18982762490880. Its totient is φ = 18377462561920.

The previous prime is 18678756924349. The next prime is 18678756924379. The reversal of 18678756924361 is 16342965787681.

It is not a de Polignac number, because 18678756924361 - 2⁴¹ = 16479733668809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18678756924301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11868975 + ... + 13350283.

It is an arithmetic number, because the mean of its divisors is an integer number (1186422655680).

Almost surely, 2^{18678756924361} is an apocalyptic number.

It is an amenable number.

18678756924361 is a deficient number, since it is larger than the sum of its proper divisors (304005566519).

18678756924361 is a wasteful number, since it uses less digits than its factorization.

18678756924361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482224.

The product of its digits is 731566080, while the sum is 73.

The spelling of 18678756924361 in words is "eighteen trillion, six hundred seventy-eight billion, seven hundred fifty-six million, nine hundred twenty-four thousand, three hundred sixty-one".