20288892899 has 18 divisors (see below), whose sum is σ = 22503723732. Its totient is φ = 18140812800.

The previous prime is 20288892859. The next prime is 20288892907. The reversal of 20288892899 is 99829888202.

It is not a de Polignac number, because 20288892899 - 2³² = 15993925603 is a prime.

It is a super-3 number, since 3×20288892899³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20288892829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31651619 + ... + 31652259.

It is an arithmetic number, because the mean of its divisors is an integer number (1250206874).

Almost surely, 2^20288892899 is an apocalyptic number.

20288892899 is a deficient number, since it is larger than the sum of its proper divisors (2214830833).

20288892899 is an frugal number, since it uses more digits than its factorization.

20288892899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 65.

The spelling of 20288892899 in words is "twenty billion, two hundred eighty-eight million, eight hundred ninety-two thousand, eight hundred ninety-nine".