20200007761957 has 2 divisors, whose sum is σ = 20200007761958. Its totient is φ = 20200007761956.

The previous prime is 20200007761909. The next prime is 20200007761961. The reversal of 20200007761957 is 75916770000202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15563332711521 + 4636675050436 = 3945039^2 + 2153294^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200007761957 - 2²⁷ = 20199873544229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200007761357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100003880978 + 10100003880979.

It is an arithmetic number, because the mean of its divisors is an integer number (10100003880979).

Almost surely, 2^{20200007761957} is an apocalyptic number.

It is an amenable number.

20200007761957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200007761957 is an equidigital number, since it uses as much as digits as its factorization.

20200007761957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 20200007761957 in words is "twenty trillion, two hundred billion, seven million, seven hundred sixty-one thousand, nine hundred fifty-seven".