77761172714149 has 2 divisors, whose sum is σ = 77761172714150. Its totient is φ = 77761172714148.

The previous prime is 77761172714081. The next prime is 77761172714189. The reversal of 77761172714149 is 94141727116777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76481706325924 + 1279466388225 = 8745382^2 + 1131135^2 .

It is a cyclic number.

It is not a de Polignac number, because 77761172714149 - 2¹⁷ = 77761172583077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77761172714189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38880586357074 + 38880586357075.

It is an arithmetic number, because the mean of its divisors is an integer number (38880586357075).

Almost surely, 2^{77761172714149} is an apocalyptic number.

It is an amenable number.

77761172714149 is a deficient number, since it is larger than the sum of its proper divisors (1).

77761172714149 is an equidigital number, since it uses as much as digits as its factorization.

77761172714149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29042496, while the sum is 64.

The spelling of 77761172714149 in words is "seventy-seven trillion, seven hundred sixty-one billion, one hundred seventy-two million, seven hundred fourteen thousand, one hundred forty-nine".