4044659218161 has 8 divisors (see below), whose sum is σ = 5448475648224. Its totient is φ = 2668641133440.

The previous prime is 4044659218157. The next prime is 4044659218181. The reversal of 4044659218161 is 1618129564404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4044659218161 - 2² = 4044659218157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4044659218121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6949585995 + ... + 6949586576.

It is an arithmetic number, because the mean of its divisors is an integer number (681059456028).

Almost surely, 2^{4044659218161} is an apocalyptic number.

It is an amenable number.

4044659218161 is a deficient number, since it is larger than the sum of its proper divisors (1403816430063).

4044659218161 is a wasteful number, since it uses less digits than its factorization.

4044659218161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899172671.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 4044659218161 in words is "four trillion, forty-four billion, six hundred fifty-nine million, two hundred eighteen thousand, one hundred sixty-one".