20005216163736 has 16 divisors (see below), whose sum is σ = 50013040409400. Its totient is φ = 6668405387904.

The previous prime is 20005216163707. The next prime is 20005216163753. The reversal of 20005216163736 is 63736161250002.

It is a super-2 number, since 2×20005216163736² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 416775336721 + ... + 416775336768.

Almost surely, 2^{20005216163736} is an apocalyptic number.

It is an amenable number.

20005216163736 is an abundant number, since it is smaller than the sum of its proper divisors (30007824245664).

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

20005216163736 is a wasteful number, since it uses less digits than its factorization.

20005216163736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833550673498 (or 833550673494 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 20005216163736 in words is "twenty trillion, five billion, two hundred sixteen million, one hundred sixty-three thousand, seven hundred thirty-six".