20206376313757 has 4 divisors (see below), whose sum is σ = 20699214760476. Its totient is φ = 19713537867040.

The previous prime is 20206376313733. The next prime is 20206376313791. The reversal of 20206376313757 is 75731367360202.

It is a happy number.

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 8785687252356 + 11420689061401 = 2964066^2 + 3379451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20206376313757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206376313727) 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, 246419223298 + ... + 246419223379.

It is an arithmetic number, because the mean of its divisors is an integer number (5174803690119).

Almost surely, 2^{20206376313757} is an apocalyptic number.

It is an amenable number.

20206376313757 is a deficient number, since it is larger than the sum of its proper divisors (492838446719).

20206376313757 is an equidigital number, since it uses as much as digits as its factorization.

20206376313757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492838446718.

The product of its (nonzero) digits is 6667920, while the sum is 52.

The spelling of 20206376313757 in words is "twenty trillion, two hundred six billion, three hundred seventy-six million, three hundred thirteen thousand, seven hundred fifty-seven".