131920010777 has 2 divisors, whose sum is σ = 131920010778. Its totient is φ = 131920010776.

The previous prime is 131920010707. The next prime is 131920010801. The reversal of 131920010777 is 777010029131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111949798921 + 19970211856 = 334589^2 + 141316^2 .

It is a cyclic number.

It is not a de Polignac number, because 131920010777 - 2³⁰ = 130846268953 is a prime.

It is a super-2 number, since 2×131920010777² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131920010777.

It is not a weakly prime, because it can be changed into another prime (131920010707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65960005388 + 65960005389.

It is an arithmetic number, because the mean of its divisors is an integer number (65960005389).

Almost surely, 2^131920010777 is an apocalyptic number.

It is an amenable number.

131920010777 is a deficient number, since it is larger than the sum of its proper divisors (1).

131920010777 is an equidigital number, since it uses as much as digits as its factorization.

131920010777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 38.

The spelling of 131920010777 in words is "one hundred thirty-one billion, nine hundred twenty million, ten thousand, seven hundred seventy-seven".