20668622088 has 16 divisors (see below), whose sum is σ = 51671555280. Its totient is φ = 6889540688.

The previous prime is 20668622087. The next prime is 20668622119. The reversal of 20668622088 is 88022686602.

It is a super-2 number, since 2×20668622088² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20668622087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430596270 + ... + 430596317.

It is an arithmetic number, because the mean of its divisors is an integer number (3229472205).

Almost surely, 2^20668622088 is an apocalyptic number.

It is an amenable number.

20668622088 is an abundant number, since it is smaller than the sum of its proper divisors (31002933192).

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

20668622088 is a wasteful number, since it uses less digits than its factorization.

20668622088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861192596 (or 861192592 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 20668622088 in words is "twenty billion, six hundred sixty-eight million, six hundred twenty-two thousand, eighty-eight".