20790894216 has 32 divisors (see below), whose sum is σ = 52709313600. Its totient is φ = 6832687680.

The previous prime is 20790894211. The next prime is 20790894259. The reversal of 20790894216 is 61249809702.

It is a super-2 number, since 2×20790894216² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20790894211) 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, 6098911 + ... + 6102318.

It is an arithmetic number, because the mean of its divisors is an integer number (1647166050).

Almost surely, 2^20790894216 is an apocalyptic number.

It is an amenable number.

20790894216 is an abundant number, since it is smaller than the sum of its proper divisors (31918419384).

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

20790894216 is a wasteful number, since it uses less digits than its factorization.

20790894216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12201309 (or 12201305 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 20790894216 in words is "twenty billion, seven hundred ninety million, eight hundred ninety-four thousand, two hundred sixteen".