20135672763757 has 4 divisors (see below), whose sum is σ = 20135901331420. Its totient is φ = 20135444196096.

The previous prime is 20135672763751. The next prime is 20135672763863. The reversal of 20135672763757 is 75736727653102.

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 12179967380361 + 7955705383396 = 3489981^2 + 2820586^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135672763757 - 2⁴³ = 11339579741549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20135672763695 and 20135672763704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135672763751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114151638 + ... + 114327895.

It is an arithmetic number, because the mean of its divisors is an integer number (5033975332855).

Almost surely, 2^{20135672763757} is an apocalyptic number.

It is an amenable number.

20135672763757 is a deficient number, since it is larger than the sum of its proper divisors (228567663).

20135672763757 is an equidigital number, since it uses as much as digits as its factorization.

20135672763757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228567662.

The product of its (nonzero) digits is 77792400, while the sum is 61.

The spelling of 20135672763757 in words is "twenty trillion, one hundred thirty-five billion, six hundred seventy-two million, seven hundred sixty-three thousand, seven hundred fifty-seven".