20880539001 has 45 divisors (see below), whose sum is σ = 35221311749. Its totient is φ = 11919598488.

The previous prime is 20880538981. The next prime is 20880539021. The reversal of 20880539001 is 10093508802.

The square root of 20880539001 is 144501.

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

It is an interprime number because it is at equal distance from previous prime (20880538981) and next prime (20880539021).

It is not a de Polignac number, because 20880539001 - 2⁵ = 20880538969 is a prime.

It is a super-3 number, since 3×20880539001³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20880539021) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 21241156 + ... + 21242138.

Almost surely, 2^20880539001 is an apocalyptic number.

20880539001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20880539001 is the 144501-st square number.

20880539001 is the 72251-st centered octagonal number.

It is an amenable number.

20880539001 is a deficient number, since it is larger than the sum of its proper divisors (14340772748).

20880539001 is an frugal number, since it uses more digits than its factorization.

20880539001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Multiplying 20880539001 by its sum of digits (36), we get a square (751699404036 = 867006²).

The spelling of 20880539001 in words is "twenty billion, eight hundred eighty million, five hundred thirty-nine thousand, one".