20588328291 has 8 divisors (see below), whose sum is σ = 27460744384. Its totient is φ = 13720732200.

The previous prime is 20588328269. The next prime is 20588328317. The reversal of 20588328291 is 19282388502.

It is a happy number.

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

It is not a de Polignac number, because 20588328291 - 2¹⁵ = 20588295523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20588328291.

It is not an unprimeable number, because it can be changed into a prime (20588329291) 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, 1195021 + ... + 1212126.

It is an arithmetic number, because the mean of its divisors is an integer number (3432593048).

Almost surely, 2^20588328291 is an apocalyptic number.

20588328291 is a deficient number, since it is larger than the sum of its proper divisors (6872416093).

20588328291 is a wasteful number, since it uses less digits than its factorization.

20588328291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410001.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 20588328291 in words is "twenty billion, five hundred eighty-eight million, three hundred twenty-eight thousand, two hundred ninety-one".