20356722753 has 16 divisors (see below), whose sum is σ = 28763078400. Its totient is φ = 12783585920.

The previous prime is 20356722679. The next prime is 20356722773. The reversal of 20356722753 is 35722765302.

It is a cyclic number.

It is not a de Polignac number, because 20356722753 - 2⁸ = 20356722497 is a prime.

It is a super-2 number, since 2×20356722753² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20356722773) 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 15 ways as a sum of consecutive naturals, for example, 2849913 + ... + 2857046.

It is an arithmetic number, because the mean of its divisors is an integer number (1797692400).

Almost surely, 2^20356722753 is an apocalyptic number.

It is an amenable number.

20356722753 is a deficient number, since it is larger than the sum of its proper divisors (8406355647).

20356722753 is a wasteful number, since it uses less digits than its factorization.

20356722753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707032.

The product of its (nonzero) digits is 529200, while the sum is 42.

The spelling of 20356722753 in words is "twenty billion, three hundred fifty-six million, seven hundred twenty-two thousand, seven hundred fifty-three".