616442634121 has 8 divisors (see below), whose sum is σ = 636284676800. Its totient is φ = 596768035248.

The previous prime is 616442634109. The next prime is 616442634217. The reversal of 616442634121 is 121436244616.

It is a happy number.

616442634121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 616442634121 - 2⁷ = 616442633993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616442644121) 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, 41853471 + ... + 41868196.

It is an arithmetic number, because the mean of its divisors is an integer number (79535584600).

Almost surely, 2^616442634121 is an apocalyptic number.

It is an amenable number.

616442634121 is a deficient number, since it is larger than the sum of its proper divisors (19842042679).

616442634121 is a wasteful number, since it uses less digits than its factorization.

616442634121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83721903.

The product of its digits is 165888, while the sum is 40.

Adding to 616442634121 its reverse (121436244616), we get a palindrome (737878878737).

The spelling of 616442634121 in words is "six hundred sixteen billion, four hundred forty-two million, six hundred thirty-four thousand, one hundred twenty-one".