20942584317 has 8 divisors (see below), whose sum is σ = 31026050880. Its totient is φ = 13961722860.

The previous prime is 20942584303. The next prime is 20942584331. The reversal of 20942584317 is 71348524902.

20942584317 is a `hidden beast` number, since 20 + 9 + 42 + 584 + 3 + 1 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (20942584303) and next prime (20942584331).

It is not a de Polignac number, because 20942584317 - 2²⁴ = 20925807101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20942584517) 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, 387825609 + ... + 387825662.

It is an arithmetic number, because the mean of its divisors is an integer number (3878256360).

Almost surely, 2^20942584317 is an apocalyptic number.

20942584317 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20942584317 is a deficient number, since it is larger than the sum of its proper divisors (10083466563).

20942584317 is an equidigital number, since it uses as much as digits as its factorization.

20942584317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775651280 (or 775651274 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 20942584317 in words is "twenty billion, nine hundred forty-two million, five hundred eighty-four thousand, three hundred seventeen".