77367111065 has 4 divisors (see below), whose sum is σ = 92840533284. Its totient is φ = 61893688848.

The previous prime is 77367111049. The next prime is 77367111113. The reversal of 77367111065 is 56011176377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20167692169 + 57199418896 = 142013^2 + 239164^2 .

It is a cyclic number.

It is not a de Polignac number, because 77367111065 - 2⁴ = 77367111049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7736711102 + ... + 7736711111.

It is an arithmetic number, because the mean of its divisors is an integer number (23210133321).

Almost surely, 2^77367111065 is an apocalyptic number.

It is an amenable number.

77367111065 is a deficient number, since it is larger than the sum of its proper divisors (15473422219).

77367111065 is a wasteful number, since it uses less digits than its factorization.

77367111065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15473422218.

The product of its (nonzero) digits is 185220, while the sum is 44.

The spelling of 77367111065 in words is "seventy-seven billion, three hundred sixty-seven million, one hundred eleven thousand, sixty-five".