16622430637 has 2 divisors, whose sum is σ = 16622430638. Its totient is φ = 16622430636.

The previous prime is 16622430631. The next prime is 16622430647. The reversal of 16622430637 is 73603422661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10819952361 + 5802478276 = 104019^2 + 76174^2 .

It is a cyclic number.

It is not a de Polignac number, because 16622430637 - 2³¹ = 14474946989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16622430637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16622430631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8311215318 + 8311215319.

It is an arithmetic number, because the mean of its divisors is an integer number (8311215319).

Almost surely, 2^16622430637 is an apocalyptic number.

It is an amenable number.

16622430637 is a deficient number, since it is larger than the sum of its proper divisors (1).

16622430637 is an equidigital number, since it uses as much as digits as its factorization.

16622430637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 16622430637 in words is "sixteen billion, six hundred twenty-two million, four hundred thirty thousand, six hundred thirty-seven".