400605513023201 has 16 divisors (see below), whose sum is σ = 401392487422080. Its totient is φ = 399819398643840.

The previous prime is 400605513023197. The next prime is 400605513023249. The reversal of 400605513023201 is 102320315506004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400605513023201 - 2² = 400605513023197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400605513023701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12929833556 + ... + 12929864538.

It is an arithmetic number, because the mean of its divisors is an integer number (25087030463880).

Almost surely, 2^{400605513023201} is an apocalyptic number.

It is an amenable number.

400605513023201 is a deficient number, since it is larger than the sum of its proper divisors (786974398879).

400605513023201 is a wasteful number, since it uses less digits than its factorization.

400605513023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44056.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 400605513023201 its reverse (102320315506004), we get a palindrome (502925828529205).

The spelling of 400605513023201 in words is "four hundred trillion, six hundred five billion, five hundred thirteen million, twenty-three thousand, two hundred one".