20589609001 has 4 divisors (see below), whose sum is σ = 22173425092. Its totient is φ = 19005792912.

The previous prime is 20589608983. The next prime is 20589609011. The reversal of 20589609001 is 10090698502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13223850025 + 7365758976 = 114995^2 + 85824^2 .

It is a cyclic number.

It is not a de Polignac number, because 20589609001 - 2²³ = 20581220393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20589609011) 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, 791908026 + ... + 791908051.

It is an arithmetic number, because the mean of its divisors is an integer number (5543356273).

Almost surely, 2^20589609001 is an apocalyptic number.

It is an amenable number.

20589609001 is a deficient number, since it is larger than the sum of its proper divisors (1583816091).

20589609001 is a wasteful number, since it uses less digits than its factorization.

20589609001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583816090.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 20589609001 in words is "twenty billion, five hundred eighty-nine million, six hundred nine thousand, one".