400033441381 has 4 divisors (see below), whose sum is σ = 457181075872. Its totient is φ = 342885806892.

The previous prime is 400033441373. The next prime is 400033441387. The reversal of 400033441381 is 183144330004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400033441381 - 2³ = 400033441373 is a prime.

It is a super-2 number, since 2×400033441381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400033441387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28573817235 + ... + 28573817248.

It is an arithmetic number, because the mean of its divisors is an integer number (114295268968).

Almost surely, 2^400033441381 is an apocalyptic number.

It is an amenable number.

400033441381 is a deficient number, since it is larger than the sum of its proper divisors (57147634491).

400033441381 is an equidigital number, since it uses as much as digits as its factorization.

400033441381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57147634490.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 400033441381 its reverse (183144330004), we get a palindrome (583177771385).

The spelling of 400033441381 in words is "four hundred billion, thirty-three million, four hundred forty-one thousand, three hundred eighty-one".