400020021031433 has 8 divisors (see below), whose sum is σ = 436526748318240. Its totient is φ = 363536838882880.

The previous prime is 400020021031289. The next prime is 400020021031483. The reversal of 400020021031433 is 334130120020004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400020021031433 - 2¹⁴ = 400020021015049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400020021031399 and 400020021031408.

It is not an unprimeable number, because it can be changed into a prime (400020021031483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5886249035 + ... + 5886316992.

It is an arithmetic number, because the mean of its divisors is an integer number (54565843539780).

Almost surely, 2^{400020021031433} is an apocalyptic number.

It is an amenable number.

400020021031433 is a deficient number, since it is larger than the sum of its proper divisors (36506727286807).

400020021031433 is a wasteful number, since it uses less digits than its factorization.

400020021031433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11772569127.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 400020021031433 its reverse (334130120020004), we get a palindrome (734150141051437).

The spelling of 400020021031433 in words is "four hundred trillion, twenty billion, twenty-one million, thirty-one thousand, four hundred thirty-three".