4004464115661 has 32 divisors (see below), whose sum is σ = 5563650129408. Its totient is φ = 2560301414400.

The previous prime is 4004464115647. The next prime is 4004464115689. The reversal of 4004464115661 is 1665114644004.

It is not a de Polignac number, because 4004464115661 - 2⁴¹ = 1805440860109 is a prime.

It is a super-4 number, since 4×4004464115661⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004464115461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68070 + ... + 2830823.

It is an arithmetic number, because the mean of its divisors is an integer number (173864066544).

Almost surely, 2^{4004464115661} is an apocalyptic number.

It is an amenable number.

4004464115661 is a deficient number, since it is larger than the sum of its proper divisors (1559186013747).

4004464115661 is a wasteful number, since it uses less digits than its factorization.

4004464115661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899141.

The product of its (nonzero) digits is 276480, while the sum is 42.

Adding to 4004464115661 its reverse (1665114644004), we get a palindrome (5669578759665).

The spelling of 4004464115661 in words is "four trillion, four billion, four hundred sixty-four million, one hundred fifteen thousand, six hundred sixty-one".