77198492459 has 8 divisors (see below), whose sum is σ = 85084750128. Its totient is φ = 69456936960.

The previous prime is 77198492443. The next prime is 77198492467. The reversal of 77198492459 is 95429489177.

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 77198492459 - 2⁴ = 77198492443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77198492395 and 77198492404.

It is not an unprimeable number, because it can be changed into a prime (77198492479) 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 7 ways as a sum of consecutive naturals, for example, 36174422 + ... + 36176555.

It is an arithmetic number, because the mean of its divisors is an integer number (10635593766).

Almost surely, 2^77198492459 is an apocalyptic number.

77198492459 is a deficient number, since it is larger than the sum of its proper divisors (7886257669).

77198492459 is a wasteful number, since it uses less digits than its factorization.

77198492459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72351085.

The product of its digits is 45722880, while the sum is 65.

The spelling of 77198492459 in words is "seventy-seven billion, one hundred ninety-eight million, four hundred ninety-two thousand, four hundred fifty-nine".