77320194249 has 8 divisors (see below), whose sum is σ = 103229066592. Its totient is φ = 51479059040.

The previous prime is 77320194241. The next prime is 77320194269. The reversal of 77320194249 is 94249102377.

It is a happy number.

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 77320194249 - 2³ = 77320194241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77320194198 and 77320194207.

It is not an unprimeable number, because it can be changed into a prime (77320194241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16931619 + ... + 16936184.

It is an arithmetic number, because the mean of its divisors is an integer number (12903633324).

Almost surely, 2^77320194249 is an apocalyptic number.

It is an amenable number.

77320194249 is a deficient number, since it is larger than the sum of its proper divisors (25908872343).

77320194249 is a wasteful number, since it uses less digits than its factorization.

77320194249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33868567.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 77320194249 in words is "seventy-seven billion, three hundred twenty million, one hundred ninety-four thousand, two hundred forty-nine".