77361109827 has 4 divisors (see below), whose sum is σ = 103148146440. Its totient is φ = 51574073216.

The previous prime is 77361109807. The next prime is 77361109829. The reversal of 77361109827 is 72890116377.

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

It is a cyclic number.

It is not a de Polignac number, because 77361109827 - 2¹⁶ = 77361044291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77361109827.

It is not an unprimeable number, because it can be changed into a prime (77361109829) 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, 12893518302 + ... + 12893518307.

It is an arithmetic number, because the mean of its divisors is an integer number (25787036610).

Almost surely, 2^77361109827 is an apocalyptic number.

77361109827 is a deficient number, since it is larger than the sum of its proper divisors (25787036613).

77361109827 is a wasteful number, since it uses less digits than its factorization.

77361109827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25787036612.

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 77361109827 in words is "seventy-seven billion, three hundred sixty-one million, one hundred nine thousand, eight hundred twenty-seven".