444621665114513 has 4 divisors (see below), whose sum is σ = 444621730432368. Its totient is φ = 444621599796660.

The previous prime is 444621665114503. The next prime is 444621665114567. The reversal of 444621665114513 is 315411566126444.

It is a happy number.

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 444621665114513 - 2⁸ = 444621665114257 is a prime.

It is a super-2 number, since 2×444621665114513² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444621665114503) 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, 21079943 + ... + 36518588.

It is an arithmetic number, because the mean of its divisors is an integer number (111155432608092).

Almost surely, 2^{444621665114513} is an apocalyptic number.

It is an amenable number.

444621665114513 is a deficient number, since it is larger than the sum of its proper divisors (65317855).

444621665114513 is an equidigital number, since it uses as much as digits as its factorization.

444621665114513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65317854.

The product of its digits is 8294400, while the sum is 53.

The spelling of 444621665114513 in words is "four hundred forty-four trillion, six hundred twenty-one billion, six hundred sixty-five million, one hundred fourteen thousand, five hundred thirteen".