20570247548 has 6 divisors (see below), whose sum is σ = 35997933216. Its totient is φ = 10285123772.

The previous prime is 20570247497. The next prime is 20570247589. The reversal of 20570247548 is 84574207502.

It is a junction number, because it is equal to n+sod(n) for n = 20570247499 and 20570247508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571280940 + ... + 2571280947.

It is an arithmetic number, because the mean of its divisors is an integer number (5999655536).

Almost surely, 2^20570247548 is an apocalyptic number.

It is an amenable number.

20570247548 is a deficient number, since it is larger than the sum of its proper divisors (15427685668).

20570247548 is a wasteful number, since it uses less digits than its factorization.

20570247548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142561891 (or 5142561889 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 20570247548 in words is "twenty billion, five hundred seventy million, two hundred forty-seven thousand, five hundred forty-eight".