20304542285 has 16 divisors (see below), whose sum is σ = 25155863040. Its totient is φ = 15716877120.

The previous prime is 20304542267. The next prime is 20304542303. The reversal of 20304542285 is 58224540302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20304542267) and next prime (20304542303).

It is not a de Polignac number, because 20304542285 - 2⁶ = 20304542221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1557926 + ... + 1570904.

It is an arithmetic number, because the mean of its divisors is an integer number (1572241440).

Almost surely, 2^20304542285 is an apocalyptic number.

It is an amenable number.

20304542285 is a deficient number, since it is larger than the sum of its proper divisors (4851320755).

20304542285 is a wasteful number, since it uses less digits than its factorization.

20304542285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23108.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 20304542285 in words is "twenty billion, three hundred four million, five hundred forty-two thousand, two hundred eighty-five".