16665373839894 has 48 divisors (see below), whose sum is σ = 36092562781392. Its totient is φ = 5127709576704.

The previous prime is 16665373839887. The next prime is 16665373839911. The reversal of 16665373839894 is 49893837356661.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67426282 + ... + 67672994.

It is an arithmetic number, because the mean of its divisors is an integer number (751928391279).

Almost surely, 2^{16665373839894} is an apocalyptic number.

16665373839894 is an abundant number, since it is smaller than the sum of its proper divisors (19427188941498).

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

16665373839894 is a wasteful number, since it uses less digits than its factorization.

16665373839894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313361 (or 313348 counting only the distinct ones).

The product of its digits is 4232632320, while the sum is 78.

The spelling of 16665373839894 in words is "sixteen trillion, six hundred sixty-five billion, three hundred seventy-three million, eight hundred thirty-nine thousand, eight hundred ninety-four".