18368266077 has 60 divisors (see below), whose sum is σ = 32003597340. Its totient is φ = 10468289664.

The previous prime is 18368266031. The next prime is 18368266079. The reversal of 18368266077 is 77066286381.

18368266077 is a `hidden beast` number, since 1 + 8 + 3 + 6 + 8 + 26 + 607 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13045979961 + 5322286116 = 114219^2 + 72954^2 .

It is not a de Polignac number, because 18368266077 - 2¹⁰ = 18368265053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368266079) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1537993 + ... + 1549889.

It is an arithmetic number, because the mean of its divisors is an integer number (533393289).

Almost surely, 2^18368266077 is an apocalyptic number.

It is an amenable number.

18368266077 is a deficient number, since it is larger than the sum of its proper divisors (13635331263).

18368266077 is a wasteful number, since it uses less digits than its factorization.

18368266077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12312 (or 12296 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 18368266077 in words is "eighteen billion, three hundred sixty-eight million, two hundred sixty-six thousand, seventy-seven".