77056347187 has 2 divisors, whose sum is σ = 77056347188. Its totient is φ = 77056347186.

The previous prime is 77056347133. The next prime is 77056347217. The reversal of 77056347187 is 78174365077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77056347187 - 2²³ = 77047958579 is a prime.

It is not a weakly prime, because it can be changed into another prime (77056347587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38528173593 + 38528173594.

It is an arithmetic number, because the mean of its divisors is an integer number (38528173594).

Almost surely, 2^77056347187 is an apocalyptic number.

77056347187 is a deficient number, since it is larger than the sum of its proper divisors (1).

77056347187 is an equidigital number, since it uses as much as digits as its factorization.

77056347187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6914880, while the sum is 55.

The spelling of 77056347187 in words is "seventy-seven billion, fifty-six million, three hundred forty-seven thousand, one hundred eighty-seven".