20605127547 has 8 divisors (see below), whose sum is σ = 27502827856. Its totient is φ = 13722089472.

The previous prime is 20605127527. The next prime is 20605127579. The reversal of 20605127547 is 74572150602.

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

It is not a de Polignac number, because 20605127547 - 2³⁰ = 19531385723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20605127527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3662278 + ... + 3667899.

It is an arithmetic number, because the mean of its divisors is an integer number (3437853482).

Almost surely, 2^20605127547 is an apocalyptic number.

20605127547 is a deficient number, since it is larger than the sum of its proper divisors (6897700309).

20605127547 is an equidigital number, since it uses as much as digits as its factorization.

20605127547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331117.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 20605127547 in words is "twenty billion, six hundred five million, one hundred twenty-seven thousand, five hundred forty-seven".