16874139641 has 2 divisors, whose sum is σ = 16874139642. Its totient is φ = 16874139640.

The previous prime is 16874139637. The next prime is 16874139661. The reversal of 16874139641 is 14693147861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15826646416 + 1047493225 = 125804^2 + 32365^2 .

It is a cyclic number.

It is not a de Polignac number, because 16874139641 - 2² = 16874139637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16874139641.

It is not a weakly prime, because it can be changed into another prime (16874139661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8437069820 + 8437069821.

It is an arithmetic number, because the mean of its divisors is an integer number (8437069821).

Almost surely, 2^16874139641 is an apocalyptic number.

It is an amenable number.

16874139641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16874139641 is an equidigital number, since it uses as much as digits as its factorization.

16874139641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The spelling of 16874139641 in words is "sixteen billion, eight hundred seventy-four million, one hundred thirty-nine thousand, six hundred forty-one".