20727131216 has 40 divisors (see below), whose sum is σ = 45222843648. Its totient is φ = 9117504000.

The previous prime is 20727131213. The next prime is 20727131251. The reversal of 20727131216 is 61213172702.

It is a super-2 number, since 2×20727131216² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727131213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894025 + ... + 1904936.

Almost surely, 2^20727131216 is an apocalyptic number.

It is an amenable number.

20727131216 is an abundant number, since it is smaller than the sum of its proper divisors (24495712432).

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

20727131216 is a wasteful number, since it uses less digits than its factorization.

20727131216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3799011 (or 3799005 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 20727131216 in words is "twenty billion, seven hundred twenty-seven million, one hundred thirty-one thousand, two hundred sixteen".