400032020553 has 16 divisors (see below), whose sum is σ = 587863367616. Its totient is φ = 239944227840.

The previous prime is 400032020501. The next prime is 400032020561. The reversal of 400032020553 is 355020230004.

It is not a de Polignac number, because 400032020553 - 2¹² = 400032016457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400032020153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62482276 + ... + 62488677.

It is an arithmetic number, because the mean of its divisors is an integer number (36741460476).

Almost surely, 2^400032020553 is an apocalyptic number.

It is an amenable number.

400032020553 is a deficient number, since it is larger than the sum of its proper divisors (187831347063).

400032020553 is a wasteful number, since it uses less digits than its factorization.

400032020553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124971064.

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 400032020553 its reverse (355020230004), we get a palindrome (755052250557).

The spelling of 400032020553 in words is "four hundred billion, thirty-two million, twenty thousand, five hundred fifty-three".