77955091793 has 4 divisors (see below), whose sum is σ = 77969346048. Its totient is φ = 77940837540.

The previous prime is 77955091771. The next prime is 77955091831. The reversal of 77955091793 is 39719055977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77955091793 - 2¹⁰ = 77955090769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77955090793) 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 3 ways as a sum of consecutive naturals, for example, 7118921 + ... + 7129862.

It is an arithmetic number, because the mean of its divisors is an integer number (19492336512).

Almost surely, 2^77955091793 is an apocalyptic number.

It is an amenable number.

77955091793 is a deficient number, since it is larger than the sum of its proper divisors (14254255).

77955091793 is a wasteful number, since it uses less digits than its factorization.

77955091793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14254254.

The product of its (nonzero) digits is 18753525, while the sum is 62.

The spelling of 77955091793 in words is "seventy-seven billion, nine hundred fifty-five million, ninety-one thousand, seven hundred ninety-three".