77696817442 has 16 divisors (see below), whose sum is σ = 123407196192. Its totient is φ = 36561321280.

The previous prime is 77696817403. The next prime is 77696817511. The reversal of 77696817442 is 24471869677.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784317 + ... + 877807.

It is an arithmetic number, because the mean of its divisors is an integer number (7712949762).

Almost surely, 2^77696817442 is an apocalyptic number.

77696817442 is a deficient number, since it is larger than the sum of its proper divisors (45710378750).

77696817442 is a wasteful number, since it uses less digits than its factorization.

77696817442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117953.

The product of its digits is 28449792, while the sum is 61.

The spelling of 77696817442 in words is "seventy-seven billion, six hundred ninety-six million, eight hundred seventeen thousand, four hundred forty-two".