442933266091 has 4 divisors (see below), whose sum is σ = 443298422512. Its totient is φ = 442568109672.

The previous prime is 442933266089. The next prime is 442933266109. The reversal of 442933266091 is 190662339244.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 442933266091 - 2¹ = 442933266089 is a prime.

It is a super-2 number, since 2×442933266091² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442933269091) 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, 182576391 + ... + 182578816.

It is an arithmetic number, because the mean of its divisors is an integer number (110824605628).

Almost surely, 2^442933266091 is an apocalyptic number.

442933266091 is a deficient number, since it is larger than the sum of its proper divisors (365156421).

442933266091 is a wasteful number, since it uses less digits than its factorization.

442933266091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365156420.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 442933266091 in words is "four hundred forty-two billion, nine hundred thirty-three million, two hundred sixty-six thousand, ninety-one".