400012053155252 has 24 divisors (see below), whose sum is σ = 717104552378760. Its totient is φ = 195125171171840.

The previous prime is 400012053155227. The next prime is 400012053155261. The reversal of 400012053155252 is 252551350210004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11551052931856 + 388461000223396 = 3398684^2 + 19709414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4527203 + ... + 28644714.

It is an arithmetic number, because the mean of its divisors is an integer number (29879356349115).

Almost surely, 2^{400012053155252} is an apocalyptic number.

It is an amenable number.

400012053155252 is a deficient number, since it is larger than the sum of its proper divisors (317092499223508).

400012053155252 is a wasteful number, since it uses less digits than its factorization.

400012053155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33245491 (or 33245489 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 400012053155252 in words is "four hundred trillion, twelve billion, fifty-three million, one hundred fifty-five thousand, two hundred fifty-two".