442616660537 has 4 divisors (see below), whose sum is σ = 442618490496. Its totient is φ = 442614830580.

The previous prime is 442616660503. The next prime is 442616660609. The reversal of 442616660537 is 735066616244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442616660537 - 2¹² = 442616656441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442616666537) 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, 484733 + ... + 1058394.

It is an arithmetic number, because the mean of its divisors is an integer number (110654622624).

Almost surely, 2^442616660537 is an apocalyptic number.

It is an amenable number.

442616660537 is a deficient number, since it is larger than the sum of its proper divisors (1829959).

442616660537 is a wasteful number, since it uses less digits than its factorization.

442616660537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829958.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 442616660537 in words is "four hundred forty-two billion, six hundred sixteen million, six hundred sixty thousand, five hundred thirty-seven".