20620888580618 has 8 divisors (see below), whose sum is σ = 30946399283748. Its totient is φ = 10305422152704.

The previous prime is 20620888580581. The next prime is 20620888580689. The reversal of 20620888580618 is 81608588802602.

It can be written as a sum of positive squares in 2 ways, for example, as 20620381295089 + 507285529 = 4540967^2 + 22523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2511063671 + ... + 2511071882.

Almost surely, 2^{20620888580618} is an apocalyptic number.

20620888580618 is a deficient number, since it is larger than the sum of its proper divisors (10325510703130).

20620888580618 is a wasteful number, since it uses less digits than its factorization.

20620888580618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022137608.

The product of its (nonzero) digits is 23592960, while the sum is 62.

The spelling of 20620888580618 in words is "twenty trillion, six hundred twenty billion, eight hundred eighty-eight million, five hundred eighty thousand, six hundred eighteen".