77699359773 has 24 divisors (see below), whose sum is σ = 128282164608. Its totient is φ = 44393903712.

The previous prime is 77699359769. The next prime is 77699359813. The reversal of 77699359773 is 37795399677.

It is not a de Polignac number, because 77699359773 - 2² = 77699359769 is a prime.

It is a super-2 number, since 2×77699359773² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77699359733) 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 23 ways as a sum of consecutive naturals, for example, 439015 + ... + 590027.

It is an arithmetic number, because the mean of its divisors is an integer number (5345090192).

Almost surely, 2^77699359773 is an apocalyptic number.

It is an amenable number.

77699359773 is a deficient number, since it is larger than the sum of its proper divisors (50582804835).

77699359773 is a wasteful number, since it uses less digits than its factorization.

77699359773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159193 (or 159190 counting only the distinct ones).

The product of its digits is 472588830, while the sum is 72.

The spelling of 77699359773 in words is "seventy-seven billion, six hundred ninety-nine million, three hundred fifty-nine thousand, seven hundred seventy-three".