77607106987 has 2 divisors, whose sum is σ = 77607106988. Its totient is φ = 77607106986.

The previous prime is 77607106957. The next prime is 77607107009. The reversal of 77607106987 is 78960170677.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77607106987 - 2⁷ = 77607106859 is a prime.

It is not a weakly prime, because it can be changed into another prime (77607106957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38803553493 + 38803553494.

It is an arithmetic number, because the mean of its divisors is an integer number (38803553494).

Almost surely, 2^77607106987 is an apocalyptic number.

77607106987 is a deficient number, since it is larger than the sum of its proper divisors (1).

77607106987 is an equidigital number, since it uses as much as digits as its factorization.

77607106987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6223392, while the sum is 58.

The spelling of 77607106987 in words is "seventy-seven billion, six hundred seven million, one hundred six thousand, nine hundred eighty-seven".