20955010261579 has 4 divisors (see below), whose sum is σ = 20961690216984. Its totient is φ = 20948330306176.

The previous prime is 20955010261561. The next prime is 20955010261583. The reversal of 20955010261579 is 97516201055902.

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 20955010261579 - 2²⁷ = 20954876043851 is a prime.

It is a super-2 number, since 2×20955010261579² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20955010261079) 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, 3339972997 + ... + 3339979270.

It is an arithmetic number, because the mean of its divisors is an integer number (5240422554246).

Almost surely, 2^{20955010261579} is an apocalyptic number.

20955010261579 is a deficient number, since it is larger than the sum of its proper divisors (6679955405).

20955010261579 is an equidigital number, since it uses as much as digits as its factorization.

20955010261579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679955404.

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 20955010261579 in words is "twenty trillion, nine hundred fifty-five billion, ten million, two hundred sixty-one thousand, five hundred seventy-nine".