16427074433617 has 2 divisors, whose sum is σ = 16427074433618. Its totient is φ = 16427074433616.

The previous prime is 16427074433591. The next prime is 16427074433669. The reversal of 16427074433617 is 71633447072461.

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., 15783743711376 + 643330722241 = 3972876^2 + 802079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16427074433617 is a prime.

It is not a weakly prime, because it can be changed into another prime (16427074433317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8213537216808 + 8213537216809.

It is an arithmetic number, because the mean of its divisors is an integer number (8213537216809).

Almost surely, 2^{16427074433617} is an apocalyptic number.

It is an amenable number.

16427074433617 is a deficient number, since it is larger than the sum of its proper divisors (1).

16427074433617 is an equidigital number, since it uses as much as digits as its factorization.

16427074433617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 55.

The spelling of 16427074433617 in words is "sixteen trillion, four hundred twenty-seven billion, seventy-four million, four hundred thirty-three thousand, six hundred seventeen".