400244520505111 has 16 divisors (see below), whose sum is σ = 419942121984000. Its totient is φ = 380971481119200.

The previous prime is 400244520505091. The next prime is 400244520505189. The reversal of 400244520505111 is 111505025442004.

It is a cyclic number.

It is not a de Polignac number, because 400244520505111 - 2¹¹ = 400244520503063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400244520503111) 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, 55965090 + ... + 62710288.

It is an arithmetic number, because the mean of its divisors is an integer number (26246382624000).

Almost surely, 2^{400244520505111} is an apocalyptic number.

400244520505111 is a deficient number, since it is larger than the sum of its proper divisors (19697601478889).

400244520505111 is a wasteful number, since it uses less digits than its factorization.

400244520505111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776670.

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 400244520505111 its reverse (111505025442004), we get a palindrome (511749545947115).

The spelling of 400244520505111 in words is "four hundred trillion, two hundred forty-four billion, five hundred twenty million, five hundred five thousand, one hundred eleven".