77066997699 has 16 divisors (see below), whose sum is σ = 104305308800. Its totient is φ = 50603572800.

The previous prime is 77066997671. The next prime is 77066997701. The reversal of 77066997699 is 99679966077.

It is not a de Polignac number, because 77066997699 - 2⁷ = 77066997571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77066997699.

It is not an unprimeable number, because it can be changed into a prime (77066997659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1522599 + ... + 1572399.

It is an arithmetic number, because the mean of its divisors is an integer number (6519081800).

Almost surely, 2^77066997699 is an apocalyptic number.

77066997699 is a deficient number, since it is larger than the sum of its proper divisors (27238311101).

77066997699 is a wasteful number, since it uses less digits than its factorization.

77066997699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57570.

The product of its (nonzero) digits is 486091368, while the sum is 75.

The spelling of 77066997699 in words is "seventy-seven billion, sixty-six million, nine hundred ninety-seven thousand, six hundred ninety-nine".