20337875749 has 2 divisors, whose sum is σ = 20337875750. Its totient is φ = 20337875748.

The previous prime is 20337875689. The next prime is 20337875759. The reversal of 20337875749 is 94757873302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14079483649 + 6258392100 = 118657^2 + 79110^2 .

It is a cyclic number.

It is not a de Polignac number, because 20337875749 - 2²⁹ = 19801004837 is a prime.

It is a super-2 number, since 2×20337875749² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20337875749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20337875759) 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 as a sum of consecutive naturals, namely, 10168937874 + 10168937875.

It is an arithmetic number, because the mean of its divisors is an integer number (10168937875).

Almost surely, 2^20337875749 is an apocalyptic number.

It is an amenable number.

20337875749 is a deficient number, since it is larger than the sum of its proper divisors (1).

20337875749 is an equidigital number, since it uses as much as digits as its factorization.

20337875749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 20337875749 in words is "twenty billion, three hundred thirty-seven million, eight hundred seventy-five thousand, seven hundred forty-nine".