20711030075 has 12 divisors (see below), whose sum is σ = 26308060968. Its totient is φ = 16164705600.

The previous prime is 20711030071. The next prime is 20711030099. The reversal of 20711030075 is 57003011702.

It is not a de Polignac number, because 20711030075 - 2² = 20711030071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20711030071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10101917 + ... + 10103966.

It is an arithmetic number, because the mean of its divisors is an integer number (2192338414).

Almost surely, 2^20711030075 is an apocalyptic number.

20711030075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20711030075 is a deficient number, since it is larger than the sum of its proper divisors (5597030893).

20711030075 is a wasteful number, since it uses less digits than its factorization.

20711030075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20205934 (or 20205929 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

Adding to 20711030075 its reverse (57003011702), we get a palindrome (77714041777).

The spelling of 20711030075 in words is "twenty billion, seven hundred eleven million, thirty thousand, seventy-five".