20357243753 has 64 divisors (see below), whose sum is σ = 26367897600. Its totient is φ = 15261523200.

The previous prime is 20357243747. The next prime is 20357243779. The reversal of 20357243753 is 35734275302.

It is not a de Polignac number, because 20357243753 - 2⁶ = 20357243689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20357243753.

It is not an unprimeable number, because it can be changed into a prime (20357243723) 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 63 ways as a sum of consecutive naturals, for example, 54576875 + ... + 54577247.

It is an arithmetic number, because the mean of its divisors is an integer number (411998400).

Almost surely, 2^20357243753 is an apocalyptic number.

It is an amenable number.

20357243753 is a deficient number, since it is larger than the sum of its proper divisors (6010653847).

20357243753 is a wasteful number, since it uses less digits than its factorization.

20357243753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 529200, while the sum is 41.

The spelling of 20357243753 in words is "twenty billion, three hundred fifty-seven million, two hundred forty-three thousand, seven hundred fifty-three".