77349188085 has 16 divisors (see below), whose sum is σ = 133278601344. Its totient is φ = 38079600192.

The previous prime is 77349188017. The next prime is 77349188099. The reversal of 77349188085 is 58088194377.

It is not a de Polignac number, because 77349188085 - 2⁷ = 77349187957 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 198331057 + ... + 198331446.

It is an arithmetic number, because the mean of its divisors is an integer number (8329912584).

Almost surely, 2^77349188085 is an apocalyptic number.

It is an amenable number.

77349188085 is a deficient number, since it is larger than the sum of its proper divisors (55929413259).

77349188085 is a wasteful number, since it uses less digits than its factorization.

77349188085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396662524.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 77349188085 in words is "seventy-seven billion, three hundred forty-nine million, one hundred eighty-eight thousand, eighty-five".