77606223939 has 6 divisors (see below), whose sum is σ = 112097879036. Its totient is φ = 51737482620.

The previous prime is 77606223911. The next prime is 77606223941. The reversal of 77606223939 is 93932260677.

77606223939 is a `hidden beast` number, since 7 + 7 + 6 + 0 + 622 + 3 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 77606223939 - 2⁸ = 77606223683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77606223839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4311456877 + ... + 4311456894.

Almost surely, 2^77606223939 is an apocalyptic number.

77606223939 is a deficient number, since it is larger than the sum of its proper divisors (34491655097).

77606223939 is a wasteful number, since it uses less digits than its factorization.

77606223939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622913777 (or 8622913774 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 54.

The spelling of 77606223939 in words is "seventy-seven billion, six hundred six million, two hundred twenty-three thousand, nine hundred thirty-nine".