20996299801 has 9 divisors (see below), whose sum is σ = 21459495061. Its totient is φ = 20542904572.

The previous prime is 20996299739. The next prime is 20996299811. The reversal of 20996299801 is 10899269902.

The square root of 20996299801 is 144901.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 20996299801 - 2⁷ = 20996299673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20996299811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6808806 + ... + 6811888.

Almost surely, 2^20996299801 is an apocalyptic number.

20996299801 is the 144901-st square number.

20996299801 is the 72451-st centered octagonal number.

It is an amenable number.

20996299801 is a deficient number, since it is larger than the sum of its proper divisors (463195260).

20996299801 is an frugal number, since it uses more digits than its factorization.

20996299801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260 (or 3130 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 20996299801 in words is "twenty billion, nine hundred ninety-six million, two hundred ninety-nine thousand, eight hundred one".