442144046540451 has 4 divisors (see below), whose sum is σ = 589525395387272. Its totient is φ = 294762697693632.

The previous prime is 442144046540437. The next prime is 442144046540461. The reversal of 442144046540451 is 154045640441244.

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

It is not a de Polignac number, because 442144046540451 - 2¹⁰ = 442144046539427 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 442144046540451.

It is not an unprimeable number, because it can be changed into a prime (442144046540431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73690674423406 + ... + 73690674423411.

It is an arithmetic number, because the mean of its divisors is an integer number (147381348846818).

Almost surely, 2^{442144046540451} is an apocalyptic number.

442144046540451 is a deficient number, since it is larger than the sum of its proper divisors (147381348846821).

442144046540451 is a wasteful number, since it uses less digits than its factorization.

442144046540451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147381348846820.

The product of its (nonzero) digits is 4915200, while the sum is 48.

Adding to 442144046540451 its reverse (154045640441244), we get a palindrome (596189686981695).

The spelling of 442144046540451 in words is "four hundred forty-two trillion, one hundred forty-four billion, forty-six million, five hundred forty thousand, four hundred fifty-one".