20717576222 has 24 divisors (see below), whose sum is σ = 36645275376. Its totient is φ = 8757328608.

The previous prime is 20717576221. The next prime is 20717576233. The reversal of 20717576222 is 22267571702.

It is a self number, because there is not a number n which added to its sum of digits gives 20717576222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20717576221) 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, 1440818 + ... + 1455125.

It is an arithmetic number, because the mean of its divisors is an integer number (1526886474).

Almost surely, 2^20717576222 is an apocalyptic number.

20717576222 is a deficient number, since it is larger than the sum of its proper divisors (15927699154).

20717576222 is a wasteful number, since it uses less digits than its factorization.

20717576222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896032 (or 2896025 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 20717576222 in words is "twenty billion, seven hundred seventeen million, five hundred seventy-six thousand, two hundred twenty-two".