20750804571 has 64 divisors (see below), whose sum is σ = 35573022720. Its totient is φ = 10473546240.

The previous prime is 20750804561. The next prime is 20750804579. The reversal of 20750804571 is 17540805702.

It is not a de Polignac number, because 20750804571 - 2²² = 20746610267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20750804579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 711486 + ... + 740076.

It is an arithmetic number, because the mean of its divisors is an integer number (555828480).

Almost surely, 2^20750804571 is an apocalyptic number.

20750804571 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20750804571 is a deficient number, since it is larger than the sum of its proper divisors (14822218149).

20750804571 is a wasteful number, since it uses less digits than its factorization.

20750804571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28744.

The product of its (nonzero) digits is 78400, while the sum is 39.

The spelling of 20750804571 in words is "twenty billion, seven hundred fifty million, eight hundred four thousand, five hundred seventy-one".