20727850986 has 24 divisors (see below), whose sum is σ = 45032729664. Its totient is φ = 6890455080.

The previous prime is 20727850963. The next prime is 20727850987. The reversal of 20727850986 is 68905872702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20727850987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1562260 + ... + 1575471.

It is an arithmetic number, because the mean of its divisors is an integer number (1876363736).

Almost surely, 2^20727850986 is an apocalyptic number.

20727850986 is an abundant number, since it is smaller than the sum of its proper divisors (24304878678).

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

20727850986 is a wasteful number, since it uses less digits than its factorization.

20727850986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138106 (or 3138103 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 20727850986 in words is "twenty billion, seven hundred twenty-seven million, eight hundred fifty thousand, nine hundred eighty-six".