400536134401 has 32 divisors (see below), whose sum is σ = 460571126400. Its totient is φ = 345265804800.

The previous prime is 400536134387. The next prime is 400536134417. The reversal of 400536134401 is 104431635004.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400536134401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400536134441) 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, 5627605 + ... + 5698333.

It is an arithmetic number, because the mean of its divisors is an integer number (14392847700).

Almost surely, 2^400536134401 is an apocalyptic number.

It is an amenable number.

400536134401 is a deficient number, since it is larger than the sum of its proper divisors (60034991999).

400536134401 is a wasteful number, since it uses less digits than its factorization.

400536134401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71089.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 400536134401 its reverse (104431635004), we get a palindrome (504967769405).

The spelling of 400536134401 in words is "four hundred billion, five hundred thirty-six million, one hundred thirty-four thousand, four hundred one".