16442615666242 has 8 divisors (see below), whose sum is σ = 24664119900732. Its totient is φ = 8221242366000.

The previous prime is 16442615666129. The next prime is 16442615666251. The reversal of 16442615666242 is 24266651624461.

It can be written as a sum of positive squares in 2 ways, for example, as 16433140395961 + 9475270281 = 4053781^2 + 97341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×16442615666242³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32419009 + ... + 32922292.

Almost surely, 2^{16442615666242} is an apocalyptic number.

16442615666242 is a deficient number, since it is larger than the sum of its proper divisors (8221504234490).

16442615666242 is a wasteful number, since it uses less digits than its factorization.

16442615666242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65467124.

The product of its digits is 19906560, while the sum is 55.

The spelling of 16442615666242 in words is "sixteen trillion, four hundred forty-two billion, six hundred fifteen million, six hundred sixty-six thousand, two hundred forty-two".