4006323220655 has 64 divisors (see below), whose sum is σ = 5632182927360. Its totient is φ = 2679212764800.

The previous prime is 4006323220597. The next prime is 4006323220681. The reversal of 4006323220655 is 5560223236004.

It is not a de Polignac number, because 4006323220655 - 2⁶ = 4006323220591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132385916 + ... + 132416174.

It is an arithmetic number, because the mean of its divisors is an integer number (88002858240).

Almost surely, 2^{4006323220655} is an apocalyptic number.

4006323220655 is a deficient number, since it is larger than the sum of its proper divisors (1625859706705).

4006323220655 is a wasteful number, since it uses less digits than its factorization.

4006323220655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30900.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 4006323220655 its reverse (5560223236004), we get a palindrome (9566546456659).

The spelling of 4006323220655 in words is "four trillion, six billion, three hundred twenty-three million, two hundred twenty thousand, six hundred fifty-five".