20547282945 has 64 divisors (see below), whose sum is σ = 38719526400. Its totient is φ = 9299808000.

The previous prime is 20547282937. The next prime is 20547282953. The reversal of 20547282945 is 54928274502.

It is an interprime number because it is at equal distance from previous prime (20547282937) and next prime (20547282953).

It is not a de Polignac number, because 20547282945 - 2³ = 20547282937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20547282894 and 20547282903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 499875 + ... + 539415.

It is an arithmetic number, because the mean of its divisors is an integer number (604992600).

Almost surely, 2^20547282945 is an apocalyptic number.

It is an amenable number.

20547282945 is a deficient number, since it is larger than the sum of its proper divisors (18172243455).

20547282945 is a wasteful number, since it uses less digits than its factorization.

20547282945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39671 (or 39657 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 20547282945 in words is "twenty billion, five hundred forty-seven million, two hundred eighty-two thousand, nine hundred forty-five".