20418621836382 has 96 divisors (see below), whose sum is σ = 58059786021120. Its totient is φ = 5024404546560.

The previous prime is 20418621836309. The next prime is 20418621836429. The reversal of 20418621836382 is 28363812681402.

20418621836382 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 8 + 621 + 8 + 3 + 6 + 3 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 387659203 + ... + 387711870.

It is an arithmetic number, because the mean of its divisors is an integer number (604789437720).

Almost surely, 2^{20418621836382} is an apocalyptic number.

20418621836382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20418621836382 is an abundant number, since it is smaller than the sum of its proper divisors (37641164184738).

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

20418621836382 is a wasteful number, since it uses less digits than its factorization.

20418621836382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775371118 (or 775371115 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 20418621836382 in words is "twenty trillion, four hundred eighteen billion, six hundred twenty-one million, eight hundred thirty-six thousand, three hundred eighty-two".