4431001551601 has 16 divisors (see below), whose sum is σ = 4682557900800. Its totient is φ = 4181287294800.

The previous prime is 4431001551589. The next prime is 4431001551607. The reversal of 4431001551601 is 1061551001344.

It is a cyclic number.

It is not a de Polignac number, because 4431001551601 - 2⁵ = 4431001551569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431001551607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21580260 + ... + 21784618.

It is an arithmetic number, because the mean of its divisors is an integer number (292659868800).

Almost surely, 2^{4431001551601} is an apocalyptic number.

It is an amenable number.

4431001551601 is a deficient number, since it is larger than the sum of its proper divisors (251556349199).

4431001551601 is a wasteful number, since it uses less digits than its factorization.

4431001551601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208860.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 4431001551601 its reverse (1061551001344), we get a palindrome (5492552552945).

The spelling of 4431001551601 in words is "four trillion, four hundred thirty-one billion, one million, five hundred fifty-one thousand, six hundred one".