444378580379999 has 4 divisors (see below), whose sum is σ = 447209017197864. Its totient is φ = 441548143562136.

The previous prime is 444378580379971. The next prime is 444378580380001. The reversal of 444378580379999 is 999973085873444.

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 444378580379999 - 2²⁴ = 444378563602783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444378580339999) 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, 1415218408697 + ... + 1415218409010.

It is an arithmetic number, because the mean of its divisors is an integer number (111802254299466).

Almost surely, 2^{444378580379999} is an apocalyptic number.

444378580379999 is a deficient number, since it is larger than the sum of its proper divisors (2830436817865).

444378580379999 is a wasteful number, since it uses less digits than its factorization.

444378580379999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830436817864.

The product of its (nonzero) digits is 59256852480, while the sum is 89.

The spelling of 444378580379999 in words is "four hundred forty-four trillion, three hundred seventy-eight billion, five hundred eighty million, three hundred seventy-nine thousand, nine hundred ninety-nine".