20662223085 has 48 divisors (see below), whose sum is σ = 40994937984. Its totient is φ = 9430805376.

The previous prime is 20662223053. The next prime is 20662223111. The reversal of 20662223085 is 58032226602.

20662223085 is a `hidden beast` number, since 2 + 0 + 6 + 622 + 23 + 0 + 8 + 5 = 666.

It is not a de Polignac number, because 20662223085 - 2⁵ = 20662223053 is a prime.

It is a super-3 number, since 3×20662223085³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 151539 + ... + 253551.

It is an arithmetic number, because the mean of its divisors is an integer number (854061208).

Almost surely, 2^20662223085 is an apocalyptic number.

It is an amenable number.

20662223085 is a deficient number, since it is larger than the sum of its proper divisors (20332714899).

20662223085 is a wasteful number, since it uses less digits than its factorization.

20662223085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102674 (or 102671 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 20662223085 its reverse (58032226602), we get a palindrome (78694449687).

The spelling of 20662223085 in words is "twenty billion, six hundred sixty-two million, two hundred twenty-three thousand, eighty-five".