20335749259 has 12 divisors (see below), whose sum is σ = 23690145288. Its totient is φ = 17405388000.

The previous prime is 20335749227. The next prime is 20335749281. The reversal of 20335749259 is 95294753302.

It is not a de Polignac number, because 20335749259 - 2⁵ = 20335749227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20335749209) 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 11 ways as a sum of consecutive naturals, for example, 266442 + ... + 334159.

It is an arithmetic number, because the mean of its divisors is an integer number (1974178774).

Almost surely, 2^20335749259 is an apocalyptic number.

20335749259 is a deficient number, since it is larger than the sum of its proper divisors (3354396029).

20335749259 is an equidigital number, since it uses as much as digits as its factorization.

20335749259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601306 (or 601299 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 49.

The spelling of 20335749259 in words is "twenty billion, three hundred thirty-five million, seven hundred forty-nine thousand, two hundred fifty-nine".