77809342613 has 8 divisors (see below), whose sum is σ = 78064590240. Its totient is φ = 77554378960.

The previous prime is 77809342571. The next prime is 77809342657. The reversal of 77809342613 is 31624390877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77809342613 - 2⁶ = 77809342549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77809342673) 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 7 ways as a sum of consecutive naturals, for example, 485018 + ... + 625188.

It is an arithmetic number, because the mean of its divisors is an integer number (9758073780).

Almost surely, 2^77809342613 is an apocalyptic number.

It is an amenable number.

77809342613 is a deficient number, since it is larger than the sum of its proper divisors (255247627).

77809342613 is a wasteful number, since it uses less digits than its factorization.

77809342613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141987.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 77809342613 in words is "seventy-seven billion, eight hundred nine million, three hundred forty-two thousand, six hundred thirteen".