20752012707577 has 4 divisors (see below), whose sum is σ = 20769064485876. Its totient is φ = 20734960929280.

The previous prime is 20752012707571. The next prime is 20752012707611. The reversal of 20752012707577 is 77570721025702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14103149333056 + 6648863374521 = 3755416^2 + 2578539^2 .

It is a cyclic number.

It is not a de Polignac number, because 20752012707577 - 2³¹ = 20749865223929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20752012707571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8525887324 + ... + 8525889757.

It is an arithmetic number, because the mean of its divisors is an integer number (5192266121469).

Almost surely, 2^{20752012707577} is an apocalyptic number.

It is an amenable number.

20752012707577 is a deficient number, since it is larger than the sum of its proper divisors (17051778299).

20752012707577 is a wasteful number, since it uses less digits than its factorization.

20752012707577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17051778298.

The product of its (nonzero) digits is 3361400, while the sum is 52.

The spelling of 20752012707577 in words is "twenty trillion, seven hundred fifty-two billion, twelve million, seven hundred seven thousand, five hundred seventy-seven".