616308022481 has 4 divisors (see below), whose sum is σ = 636188926464. Its totient is φ = 596427118500.

The previous prime is 616308022453. The next prime is 616308022489. The reversal of 616308022481 is 184220803616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616308022481 is a prime.

It is a super-2 number, since 2×616308022481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616308022489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9940451945 + ... + 9940452006.

It is an arithmetic number, because the mean of its divisors is an integer number (159047231616).

Almost surely, 2^616308022481 is an apocalyptic number.

It is an amenable number.

616308022481 is a deficient number, since it is larger than the sum of its proper divisors (19880903983).

616308022481 is a wasteful number, since it uses less digits than its factorization.

616308022481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19880903982.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 616308022481 in words is "six hundred sixteen billion, three hundred eight million, twenty-two thousand, four hundred eighty-one".