40434040433021 has 4 divisors (see below), whose sum is σ = 40434605612544. Its totient is φ = 40433475253500.

The previous prime is 40434040432957. The next prime is 40434040433023. The reversal of 40434040433021 is 12033404043404.

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 40434040433021 - 2⁶ = 40434040432957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434040433023) 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, 282482435 + ... + 282625536.

It is an arithmetic number, because the mean of its divisors is an integer number (10108651403136).

Almost surely, 2^{40434040433021} is an apocalyptic number.

It is an amenable number.

40434040433021 is a deficient number, since it is larger than the sum of its proper divisors (565179523).

40434040433021 is an equidigital number, since it uses as much as digits as its factorization.

40434040433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565179522.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 40434040433021 its reverse (12033404043404), we get a palindrome (52467444476425).

The spelling of 40434040433021 in words is "forty trillion, four hundred thirty-four billion, forty million, four hundred thirty-three thousand, twenty-one".