20508498319 has 8 divisors (see below), whose sum is σ = 20851679232. Its totient is φ = 20166826680.

The previous prime is 20508498317. The next prime is 20508498377. The reversal of 20508498319 is 91389480502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20508498319 - 2¹ = 20508498317 is a prime.

It is a super-2 number, since 2×20508498319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20508498317) 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 7 ways as a sum of consecutive naturals, for example, 349899 + ... + 404284.

It is an arithmetic number, because the mean of its divisors is an integer number (2606459904).

Almost surely, 2^20508498319 is an apocalyptic number.

20508498319 is a deficient number, since it is larger than the sum of its proper divisors (343180913).

20508498319 is an equidigital number, since it uses as much as digits as its factorization.

20508498319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754637.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 20508498319 in words is "twenty billion, five hundred eight million, four hundred ninety-eight thousand, three hundred nineteen".