6421116153 has 8 divisors (see below), whose sum is σ = 8616020608. Its totient is φ = 4253477904.

The previous prime is 6421116047. The next prime is 6421116173. The reversal of 6421116153 is 3516111246.

It is a happy number.

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

It is not a de Polignac number, because 6421116153 - 2⁹ = 6421115641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6421116153.

It is not an unprimeable number, because it can be changed into a prime (6421116173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6816001 + ... + 6816942.

It is an arithmetic number, because the mean of its divisors is an integer number (1077002576).

Almost surely, 2^6421116153 is an apocalyptic number.

It is an amenable number.

6421116153 is a deficient number, since it is larger than the sum of its proper divisors (2194904455).

6421116153 is a wasteful number, since it uses less digits than its factorization.

6421116153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633103.

The product of its digits is 4320, while the sum is 30.

The square root of 6421116153 is about 80131.8672751359. The cubic root of 6421116153 is about 1858.6752189246.

Adding to 6421116153 its reverse (3516111246), we get a palindrome (9937227399).

The spelling of 6421116153 in words is "six billion, four hundred twenty-one million, one hundred sixteen thousand, one hundred fifty-three".