20755758579 has 4 divisors (see below), whose sum is σ = 27674344776. Its totient is φ = 13837172384.

The previous prime is 20755758521. The next prime is 20755758589. The reversal of 20755758579 is 97585755702.

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

It is a cyclic number.

It is not a de Polignac number, because 20755758579 - 2¹³ = 20755750387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20755758589) 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, 3459293094 + ... + 3459293099.

It is an arithmetic number, because the mean of its divisors is an integer number (6918586194).

Almost surely, 2^20755758579 is an apocalyptic number.

20755758579 is a deficient number, since it is larger than the sum of its proper divisors (6918586197).

20755758579 is an equidigital number, since it uses as much as digits as its factorization.

20755758579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918586196.

The product of its (nonzero) digits is 30870000, while the sum is 60.

The spelling of 20755758579 in words is "twenty billion, seven hundred fifty-five million, seven hundred fifty-eight thousand, five hundred seventy-nine".