400212433045455 has 32 divisors (see below), whose sum is σ = 645321287052288. Its totient is φ = 211786637462400.

The previous prime is 400212433045421. The next prime is 400212433045457. The reversal of 400212433045455 is 554540334212004.

It is not a de Polignac number, because 400212433045455 - 2²¹ = 400212430948303 is a prime.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1130551 + ... + 28314360.

It is an arithmetic number, because the mean of its divisors is an integer number (20166290220384).

Almost surely, 2^{400212433045455} is an apocalyptic number.

400212433045455 is a deficient number, since it is larger than the sum of its proper divisors (245108854006833).

400212433045455 is a wasteful number, since it uses less digits than its factorization.

400212433045455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29451967.

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 400212433045455 its reverse (554540334212004), we get a palindrome (954752767257459).

The spelling of 400212433045455 in words is "four hundred trillion, two hundred twelve billion, four hundred thirty-three million, forty-five thousand, four hundred fifty-five".