20166425303136 has 72 divisors (see below), whose sum is σ = 61579620136440. Its totient is φ = 5761835799552.

The previous prime is 20166425303093. The next prime is 20166425303147. The reversal of 20166425303136 is 63130352466102.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2143535401 + ... + 2143544808.

It is an arithmetic number, because the mean of its divisors is an integer number (855272501895).

Almost surely, 2^{20166425303136} is an apocalyptic number.

It is an amenable number.

20166425303136 is an abundant number, since it is smaller than the sum of its proper divisors (41413194833304).

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

20166425303136 is a wasteful number, since it uses less digits than its factorization.

20166425303136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287080236 (or 4287080221 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 20166425303136 its reverse (63130352466102), we get a palindrome (83296777769238).

The spelling of 20166425303136 in words is "twenty trillion, one hundred sixty-six billion, four hundred twenty-five million, three hundred three thousand, one hundred thirty-six".