40402051442443 has 4 divisors (see below), whose sum is σ = 40402108361088. Its totient is φ = 40401994523800.

The previous prime is 40402051442387. The next prime is 40402051442447. The reversal of 40402051442443 is 34424415020404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40402051442443 - 2²¹ = 40402049345291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40402051442447) 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, 27380971 + ... + 28818772.

It is an arithmetic number, because the mean of its divisors is an integer number (10100527090272).

Almost surely, 2^{40402051442443} is an apocalyptic number.

40402051442443 is a deficient number, since it is larger than the sum of its proper divisors (56918645).

40402051442443 is an equidigital number, since it uses as much as digits as its factorization.

40402051442443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56918644.

The product of its (nonzero) digits is 245760, while the sum is 37.

Adding to 40402051442443 its reverse (34424415020404), we get a palindrome (74826466462847).

The spelling of 40402051442443 in words is "forty trillion, four hundred two billion, fifty-one million, four hundred forty-two thousand, four hundred forty-three".