77663070707 has 4 divisors (see below), whose sum is σ = 79762072656. Its totient is φ = 75564068760.

The previous prime is 77663070697. The next prime is 77663070739. The reversal of 77663070707 is 70707036677.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70707036677 = 19 ⋅3721422983.

It is a cyclic number.

It is not a de Polignac number, because 77663070707 - 2¹⁰ = 77663069683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77668070707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049500919 + ... + 1049500992.

It is an arithmetic number, because the mean of its divisors is an integer number (19940518164).

Almost surely, 2^77663070707 is an apocalyptic number.

77663070707 is a deficient number, since it is larger than the sum of its proper divisors (2099001949).

77663070707 is a wasteful number, since it uses less digits than its factorization.

77663070707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099001948.

The product of its (nonzero) digits is 1815156, while the sum is 50.

The spelling of 77663070707 in words is "seventy-seven billion, six hundred sixty-three million, seventy thousand, seven hundred seven".