4055431672161 has 56 divisors (see below), whose sum is σ = 6402195560640. Its totient is φ = 2560600836000.

The previous prime is 4055431672153. The next prime is 4055431672177. The reversal of 4055431672161 is 1612761345504.

It is a happy number.

4055431672161 is a `hidden beast` number, since 4 + 0 + 55 + 431 + 6 + 7 + 2 + 161 = 666.

It is not a de Polignac number, because 4055431672161 - 2³ = 4055431672153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4055431672261) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 51222996 + ... + 51302106.

Almost surely, 2^{4055431672161} is an apocalyptic number.

It is an amenable number.

4055431672161 is a deficient number, since it is larger than the sum of its proper divisors (2346763888479).

4055431672161 is an equidigital number, since it uses as much as digits as its factorization.

4055431672161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82849 (or 82834 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 4055431672161 in words is "four trillion, fifty-five billion, four hundred thirty-one million, six hundred seventy-two thousand, one hundred sixty-one".