20259533069 has 4 divisors (see below), whose sum is σ = 20264538240. Its totient is φ = 20254527900.

The previous prime is 20259533057. The next prime is 20259533087. The reversal of 20259533069 is 96033595202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20259533069 - 2²⁴ = 20242755853 is a prime.

It is a super-2 number, since 2×20259533069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20259533089) 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, 2496509 + ... + 2504610.

It is an arithmetic number, because the mean of its divisors is an integer number (5066134560).

Almost surely, 2^20259533069 is an apocalyptic number.

It is an amenable number.

20259533069 is a deficient number, since it is larger than the sum of its proper divisors (5005171).

20259533069 is an equidigital number, since it uses as much as digits as its factorization.

20259533069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005170.

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 20259533069 in words is "twenty billion, two hundred fifty-nine million, five hundred thirty-three thousand, sixty-nine".