20586612387 has 8 divisors (see below), whose sum is σ = 29944163520. Its totient is φ = 12476734760.

The previous prime is 20586612379. The next prime is 20586612413. The reversal of 20586612387 is 78321668502.

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

It is a cyclic number.

It is not a de Polignac number, because 20586612387 - 2³ = 20586612379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20586612337) 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 7 ways as a sum of consecutive naturals, for example, 311918337 + ... + 311918402.

It is an arithmetic number, because the mean of its divisors is an integer number (3743020440).

Almost surely, 2^20586612387 is an apocalyptic number.

20586612387 is a deficient number, since it is larger than the sum of its proper divisors (9357551133).

20586612387 is a wasteful number, since it uses less digits than its factorization.

20586612387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623836753.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 20586612387 in words is "twenty billion, five hundred eighty-six million, six hundred twelve thousand, three hundred eighty-seven".