16442039953 has 2 divisors, whose sum is σ = 16442039954. Its totient is φ = 16442039952.

The previous prime is 16442039941. The next prime is 16442040019. The reversal of 16442039953 is 35993024461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11978864704 + 4463175249 = 109448^2 + 66807^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442039953 - 2⁵ = 16442039921 is a prime.

It is a super-3 number, since 3×16442039953³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16442039153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221019976 + 8221019977.

It is an arithmetic number, because the mean of its divisors is an integer number (8221019977).

Almost surely, 2^16442039953 is an apocalyptic number.

It is an amenable number.

16442039953 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442039953 is an equidigital number, since it uses as much as digits as its factorization.

16442039953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 16442039953 in words is "sixteen billion, four hundred forty-two million, thirty-nine thousand, nine hundred fifty-three".