20852068051 has 4 divisors (see below), whose sum is σ = 20852646952. Its totient is φ = 20851489152.

The previous prime is 20852068001. The next prime is 20852068057. The reversal of 20852068051 is 15086025802.

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 20852068051 - 2⁹ = 20852067539 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 20852068051.

It is not an unprimeable number, because it can be changed into a prime (20852068057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231561 + ... + 308746.

It is an arithmetic number, because the mean of its divisors is an integer number (5213161738).

Almost surely, 2^20852068051 is an apocalyptic number.

20852068051 is a deficient number, since it is larger than the sum of its proper divisors (578901).

20852068051 is an equidigital number, since it uses as much as digits as its factorization.

20852068051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578900.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 20852068051 in words is "twenty billion, eight hundred fifty-two million, sixty-eight thousand, fifty-one".