20356416051 has 4 divisors (see below), whose sum is σ = 27141888072. Its totient is φ = 13570944032.

The previous prime is 20356416037. The next prime is 20356416077. The reversal of 20356416051 is 15061465302.

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 20356416051 - 2¹¹ = 20356414003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20356416001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3392736006 + ... + 3392736011.

It is an arithmetic number, because the mean of its divisors is an integer number (6785472018).

Almost surely, 2^20356416051 is an apocalyptic number.

20356416051 is a deficient number, since it is larger than the sum of its proper divisors (6785472021).

20356416051 is an equidigital number, since it uses as much as digits as its factorization.

20356416051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785472020.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 20356416051 in words is "twenty billion, three hundred fifty-six million, four hundred sixteen thousand, fifty-one".