20642406633316 has 48 divisors (see below), whose sum is σ = 39761564774400. Its totient is φ = 9319116320640.

The previous prime is 20642406633313. The next prime is 20642406633347. The reversal of 20642406633316 is 61333660424602.

It is a super-2 number, since 2×20642406633316² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20642406633313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21543391 + ... + 22481158.

It is an arithmetic number, because the mean of its divisors is an integer number (828365932800).

Almost surely, 2^{20642406633316} is an apocalyptic number.

20642406633316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20642406633316 is a deficient number, since it is larger than the sum of its proper divisors (19119158141084).

20642406633316 is a wasteful number, since it uses less digits than its factorization.

20642406633316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44024764 (or 44024762 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 46.

The spelling of 20642406633316 in words is "twenty trillion, six hundred forty-two billion, four hundred six million, six hundred thirty-three thousand, three hundred sixteen".