20672672316 has 96 divisors (see below), whose sum is σ = 52548572160. Its totient is φ = 6300923904.

The previous prime is 20672672311. The next prime is 20672672357. The reversal of 20672672316 is 61327627602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20672672311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 987405 + ... + 1008123.

It is an arithmetic number, because the mean of its divisors is an integer number (547380960).

Almost surely, 2^20672672316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20672672316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26274286080).

20672672316 is an abundant number, since it is smaller than the sum of its proper divisors (31875899844).

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

20672672316 is a wasteful number, since it uses less digits than its factorization.

20672672316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20883 (or 20881 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 20672672316 in words is "twenty billion, six hundred seventy-two million, six hundred seventy-two thousand, three hundred sixteen".