6422591616 has 256 divisors, whose sum is σ = 20205400320. Its totient is φ = 1769472000.

The previous prime is 6422591597. The next prime is 6422591621. The reversal of 6422591616 is 6161952246.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11130720 + ... + 11131296.

It is an arithmetic number, because the mean of its divisors is an integer number (78927345).

Almost surely, 2^6422591616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6422591616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10102700160).

6422591616 is an abundant number, since it is smaller than the sum of its proper divisors (13782808704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6422591616 is a wasteful number, since it uses less digits than its factorization.

6422591616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 731 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 6422591616 is about 80141.0732146756. The cubic root of 6422591616 is about 1858.8175719789.

The spelling of 6422591616 in words is "six billion, four hundred twenty-two million, five hundred ninety-one thousand, six hundred sixteen".