20636018334 has 24 divisors (see below), whose sum is σ = 44770466520. Its totient is φ = 6869581488.

The previous prime is 20636018317. The next prime is 20636018423. The reversal of 20636018334 is 43381063602.

20636018334 is a `hidden beast` number, since 2 + 0 + 636 + 0 + 18 + 3 + 3 + 4 = 666.

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, 743604 + ... + 770855.

It is an arithmetic number, because the mean of its divisors is an integer number (1865436105).

Almost surely, 2^20636018334 is an apocalyptic number.

20636018334 is an abundant number, since it is smaller than the sum of its proper divisors (24134448186).

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

20636018334 is a wasteful number, since it uses less digits than its factorization.

20636018334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515224 (or 1515221 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 20636018334 in words is "twenty billion, six hundred thirty-six million, eighteen thousand, three hundred thirty-four".