15742216673 has 2 divisors, whose sum is σ = 15742216674. Its totient is φ = 15742216672.

The previous prime is 15742216603. The next prime is 15742216691. The reversal of 15742216673 is 37661224751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15368065024 + 374151649 = 123968^2 + 19343^2 .

It is an emirp because it is prime and its reverse (37661224751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15742216673 - 2¹⁴ = 15742200289 is a prime.

It is not a weakly prime, because it can be changed into another prime (15742216603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7871108336 + 7871108337.

It is an arithmetic number, because the mean of its divisors is an integer number (7871108337).

Almost surely, 2^15742216673 is an apocalyptic number.

It is an amenable number.

15742216673 is a deficient number, since it is larger than the sum of its proper divisors (1).

15742216673 is an equidigital number, since it uses as much as digits as its factorization.

15742216673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The spelling of 15742216673 in words is "fifteen billion, seven hundred forty-two million, two hundred sixteen thousand, six hundred seventy-three".