77199091199 has 4 divisors (see below), whose sum is σ = 77237634936. Its totient is φ = 77160547464.

The previous prime is 77199091171. The next prime is 77199091201. The reversal of 77199091199 is 99119099177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99119099177 = 7 ⋅14159871311.

It is a cyclic number.

It is not a de Polignac number, because 77199091199 - 2²⁸ = 76930655743 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 (77199091399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19268864 + ... + 19272869.

It is an arithmetic number, because the mean of its divisors is an integer number (19309408734).

Almost surely, 2^77199091199 is an apocalyptic number.

77199091199 is a deficient number, since it is larger than the sum of its proper divisors (38543737).

77199091199 is a wasteful number, since it uses less digits than its factorization.

77199091199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38543736.

The product of its (nonzero) digits is 2893401, while the sum is 62.

The spelling of 77199091199 in words is "seventy-seven billion, one hundred ninety-nine million, ninety-one thousand, one hundred ninety-nine".