400023433420111 has 16 divisors (see below), whose sum is σ = 425946266254080. Its totient is φ = 374368556136960.

The previous prime is 400023433420097. The next prime is 400023433420159. The reversal of 400023433420111 is 111024334320004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400023433420111 - 2¹³ = 400023433411919 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 400023433420111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400023433420211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28061820 + ... + 39843601.

It is an arithmetic number, because the mean of its divisors is an integer number (26621641640880).

Almost surely, 2^{400023433420111} is an apocalyptic number.

400023433420111 is a deficient number, since it is larger than the sum of its proper divisors (25922832833969).

400023433420111 is a wasteful number, since it uses less digits than its factorization.

400023433420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67907394.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 400023433420111 its reverse (111024334320004), we get a palindrome (511047767740115).

The spelling of 400023433420111 in words is "four hundred trillion, twenty-three billion, four hundred thirty-three million, four hundred twenty thousand, one hundred eleven".