20206202664 has 32 divisors (see below), whose sum is σ = 51343633440. Its totient is φ = 6624984000.

The previous prime is 20206202629. The next prime is 20206202711. The reversal of 20206202664 is 46620260202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6899562 + ... + 6902489.

It is an arithmetic number, because the mean of its divisors is an integer number (1604488545).

Almost surely, 2^20206202664 is an apocalyptic number.

20206202664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20206202664 is an abundant number, since it is smaller than the sum of its proper divisors (31137430776).

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

20206202664 is a wasteful number, since it uses less digits than its factorization.

20206202664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13802121 (or 13802117 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20206202664 its reverse (46620260202), we get a palindrome (66826462866).

The spelling of 20206202664 in words is "twenty billion, two hundred six million, two hundred two thousand, six hundred sixty-four".