20182900678638 has 16 divisors (see below), whose sum is σ = 40379397149520. Its totient is φ = 6725367594176.

The previous prime is 20182900678631. The next prime is 20182900678687. The reversal of 20182900678638 is 83687600928102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20182900678631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566472045 + ... + 566507672.

It is an arithmetic number, because the mean of its divisors is an integer number (2523712321845).

Almost surely, 2^{20182900678638} is an apocalyptic number.

20182900678638 is an abundant number, since it is smaller than the sum of its proper divisors (20196496470882).

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

20182900678638 is a wasteful number, since it uses less digits than its factorization.

20182900678638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132982691.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 20182900678638 in words is "twenty trillion, one hundred eighty-two billion, nine hundred million, six hundred seventy-eight thousand, six hundred thirty-eight".