5621117618 has 16 divisors (see below), whose sum is σ = 8724343680. Its totient is φ = 2713045776.

The previous prime is 5621117617. The next prime is 5621117651. The reversal of 5621117618 is 8167111265.

It is not an unprimeable number, because it can be changed into a prime (5621117611) 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 7 ways as a sum of consecutive naturals, for example, 373271 + ... + 388037.

It is an arithmetic number, because the mean of its divisors is an integer number (545271480).

Almost surely, 2^5621117618 is an apocalyptic number.

5621117618 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5621117618 is a deficient number, since it is larger than the sum of its proper divisors (3103226062).

5621117618 is a wasteful number, since it uses less digits than its factorization.

5621117618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21361.

The product of its digits is 20160, while the sum is 38.

The square root of 5621117618 is about 74974.1129857500. The cubic root of 5621117618 is about 1778.0373960434.

The spelling of 5621117618 in words is "five billion, six hundred twenty-one million, one hundred seventeen thousand, six hundred eighteen".