77667336441 has 6 divisors (see below), whose sum is σ = 112186152650. Its totient is φ = 51778224288.

The previous prime is 77667336427. The next prime is 77667336443. The reversal of 77667336441 is 14463376677.

77667336441 is a `hidden beast` number, since 77 + 66 + 73 + 3 + 6 + 441 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72794738025 + 4872598416 = 269805^2 + 69804^2 .

It is not a de Polignac number, because 77667336441 - 2⁹ = 77667335929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77667336443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4314852016 + ... + 4314852033.

Almost surely, 2^77667336441 is an apocalyptic number.

It is an amenable number.

77667336441 is a deficient number, since it is larger than the sum of its proper divisors (34518816209).

77667336441 is a wasteful number, since it uses less digits than its factorization.

77667336441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8629704055 (or 8629704052 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 54.

The spelling of 77667336441 in words is "seventy-seven billion, six hundred sixty-seven million, three hundred thirty-six thousand, four hundred forty-one".