440434403220020 has 72 divisors (see below), whose sum is σ = 1044115813286952. Its totient is φ = 155829371132160.

The previous prime is 440434403219989. The next prime is 440434403220037. The reversal of 440434403220020 is 20022304434044.

It can be written as a sum of positive squares in 4 ways, for example, as 55948425297424 + 384485977922596 = 7479868^2 + 19608314^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2459338667 + ... + 2459517746.

Almost surely, 2^{440434403220020} is an apocalyptic number.

It is an amenable number.

440434403220020 is an abundant number, since it is smaller than the sum of its proper divisors (603681410066932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440434403220020 is a wasteful number, since it uses less digits than its factorization.

440434403220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4918856481 (or 4918856468 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 440434403220020 its reverse (20022304434044), we get a palindrome (460456707654064).

The spelling of 440434403220020 in words is "four hundred forty trillion, four hundred thirty-four billion, four hundred three million, two hundred twenty thousand, twenty".