16740621959 has 2 divisors, whose sum is σ = 16740621960. Its totient is φ = 16740621958.

The previous prime is 16740621949. The next prime is 16740622001. The reversal of 16740621959 is 95912604761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16740621959 - 2²⁴ = 16723844743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16740621949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8370310979 + 8370310980.

It is an arithmetic number, because the mean of its divisors is an integer number (8370310980).

Almost surely, 2^16740621959 is an apocalyptic number.

16740621959 is a deficient number, since it is larger than the sum of its proper divisors (1).

16740621959 is an equidigital number, since it uses as much as digits as its factorization.

16740621959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 16740621959 in words is "sixteen billion, seven hundred forty million, six hundred twenty-one thousand, nine hundred fifty-nine".