16622430640 has 80 divisors (see below), whose sum is σ = 40014224640. Its totient is φ = 6415073280.

The previous prime is 16622430637. The next prime is 16622430647. The reversal of 16622430640 is 4603422661.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×16622430640² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16622430596 and 16622430605.

It is not an unprimeable number, because it can be changed into a prime (16622430647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825816 + ... + 845704.

It is an arithmetic number, because the mean of its divisors is an integer number (500177808).

Almost surely, 2^16622430640 is an apocalyptic number.

16622430640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16622430640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20007112320).

16622430640 is an abundant number, since it is smaller than the sum of its proper divisors (23391794000).

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

16622430640 is a wasteful number, since it uses less digits than its factorization.

16622430640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20270 (or 20264 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 16622430640 in words is "sixteen billion, six hundred twenty-two million, four hundred thirty thousand, six hundred forty".