400240412254553 has 16 divisors (see below), whose sum is σ = 432633064489920. Its totient is φ = 368077051949376.

The previous prime is 400240412254531. The next prime is 400240412254567. The reversal of 400240412254553 is 355452214042004.

It is a cyclic number.

It is not a de Polignac number, because 400240412254553 - 2¹⁰ = 400240412253529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400240412254553.

It is not an unprimeable number, because it can be changed into a prime (400240412254453) 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, 1001435426 + ... + 1001835012.

It is an arithmetic number, because the mean of its divisors is an integer number (27039566530620).

Almost surely, 2^{400240412254553} is an apocalyptic number.

It is an amenable number.

400240412254553 is a deficient number, since it is larger than the sum of its proper divisors (32392652235367).

400240412254553 is a wasteful number, since it uses less digits than its factorization.

400240412254553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686296.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 400240412254553 its reverse (355452214042004), we get a palindrome (755692626296557).

The spelling of 400240412254553 in words is "four hundred trillion, two hundred forty billion, four hundred twelve million, two hundred fifty-four thousand, five hundred fifty-three".