400212433045454 has 32 divisors (see below), whose sum is σ = 617520083152896. Its totient is φ = 194421585264480.

The previous prime is 400212433045421. The next prime is 400212433045457. The reversal of 400212433045454 is 454540334212004.

It is a super-2 number, since 2×400212433045454² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400212433045457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426558119 + ... + 427495325.

It is an arithmetic number, because the mean of its divisors is an integer number (19297502598528).

Almost surely, 2^{400212433045454} is an apocalyptic number.

400212433045454 is a deficient number, since it is larger than the sum of its proper divisors (217307650107442).

400212433045454 is a wasteful number, since it uses less digits than its factorization.

400212433045454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963440.

The product of its (nonzero) digits is 921600, while the sum is 41.

Adding to 400212433045454 its reverse (454540334212004), we get a palindrome (854752767257458).

The spelling of 400212433045454 in words is "four hundred trillion, two hundred twelve billion, four hundred thirty-three million, forty-five thousand, four hundred fifty-four".