18620120264 has 16 divisors (see below), whose sum is σ = 36966415500. Its totient is φ = 8762409472.

The previous prime is 18620120261. The next prime is 18620120287. The reversal of 18620120264 is 46202102681.

It can be written as a sum of positive squares in 2 ways, for example, as 17723596900 + 896523364 = 133130^2 + 29942^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18620120264.

It is not an unprimeable number, because it can be changed into a prime (18620120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68456189 + ... + 68456460.

Almost surely, 2^18620120264 is an apocalyptic number.

It is an amenable number.

18620120264 is a deficient number, since it is larger than the sum of its proper divisors (18346295236).

18620120264 is a wasteful number, since it uses less digits than its factorization.

18620120264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136912672 (or 136912668 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 18620120264 in words is "eighteen billion, six hundred twenty million, one hundred twenty thousand, two hundred sixty-four".