442287386155187 has 4 divisors (see below), whose sum is σ = 442325133660816. Its totient is φ = 442249638649560.

The previous prime is 442287386155073. The next prime is 442287386155189. The reversal of 442287386155187 is 781551683782244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442287386155187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442287386155187.

It is not an unprimeable number, because it can be changed into a prime (442287386155189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18873735239 + ... + 18873758672.

It is an arithmetic number, because the mean of its divisors is an integer number (110581283415204).

Almost surely, 2^{442287386155187} is an apocalyptic number.

442287386155187 is a deficient number, since it is larger than the sum of its proper divisors (37747505629).

442287386155187 is a wasteful number, since it uses less digits than its factorization.

442287386155187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37747505628.

The product of its digits is 722534400, while the sum is 71.

The spelling of 442287386155187 in words is "four hundred forty-two trillion, two hundred eighty-seven billion, three hundred eighty-six million, one hundred fifty-five thousand, one hundred eighty-seven".