77157110441 has 4 divisors (see below), whose sum is σ = 77164499412. Its totient is φ = 77149721472.

The previous prime is 77157110411. The next prime is 77157110447. The reversal of 77157110441 is 14401175177.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14401175177 = 15241 ⋅944897.

It can be written as a sum of positive squares in 2 ways, for example, as 49771825216 + 27385285225 = 223096^2 + 165485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77157110441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77157110395 and 77157110404.

It is not an unprimeable number, because it can be changed into a prime (77157110447) 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 3 ways as a sum of consecutive naturals, for example, 3678800 + ... + 3699713.

It is an arithmetic number, because the mean of its divisors is an integer number (19291124853).

Almost surely, 2^77157110441 is an apocalyptic number.

It is an amenable number.

77157110441 is a deficient number, since it is larger than the sum of its proper divisors (7388971).

77157110441 is a wasteful number, since it uses less digits than its factorization.

77157110441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7388970.

The product of its (nonzero) digits is 27440, while the sum is 38.

The spelling of 77157110441 in words is "seventy-seven billion, one hundred fifty-seven million, one hundred ten thousand, four hundred forty-one".