440002021343451 has 16 divisors (see below), whose sum is σ = 670778725478400. Its totient is φ = 251317430909568.

The previous prime is 440002021343447. The next prime is 440002021343501. The reversal of 440002021343451 is 154343120200044.

It is not a de Polignac number, because 440002021343451 - 2² = 440002021343447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440002021348451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4678934046 + ... + 4679028083.

It is an arithmetic number, because the mean of its divisors is an integer number (41923670342400).

Almost surely, 2^{440002021343451} is an apocalyptic number.

440002021343451 is a deficient number, since it is larger than the sum of its proper divisors (230776704134949).

440002021343451 is a wasteful number, since it uses less digits than its factorization.

440002021343451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9357964378.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 440002021343451 its reverse (154343120200044), we get a palindrome (594345141543495).

The spelling of 440002021343451 in words is "four hundred forty trillion, two billion, twenty-one million, three hundred forty-three thousand, four hundred fifty-one".