20589136955 has 8 divisors (see below), whose sum is σ = 24814856400. Its totient is φ = 16399381536.

The previous prime is 20589136949. The next prime is 20589137059. The reversal of 20589136955 is 55963198502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20589136955 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20589136897 and 20589136906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8989745 + ... + 8992034.

It is an arithmetic number, because the mean of its divisors is an integer number (3101857050).

Almost surely, 2^20589136955 is an apocalyptic number.

20589136955 is a deficient number, since it is larger than the sum of its proper divisors (4225719445).

20589136955 is a wasteful number, since it uses less digits than its factorization.

20589136955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17982013.

The product of its (nonzero) digits is 2916000, while the sum is 53.

The spelling of 20589136955 in words is "twenty billion, five hundred eighty-nine million, one hundred thirty-six thousand, nine hundred fifty-five".