5444404254521 has 4 divisors (see below), whose sum is σ = 5591550315492. Its totient is φ = 5297258193552.

The previous prime is 5444404254493. The next prime is 5444404254587. The reversal of 5444404254521 is 1254524044445.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5124767802025 + 319636452496 = 2263795^2 + 565364^2 .

It is a cyclic number.

It is not a de Polignac number, because 5444404254521 - 2²² = 5444400060217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5444404284521) 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, 73573030430 + ... + 73573030503.

It is an arithmetic number, because the mean of its divisors is an integer number (1397887578873).

Almost surely, 2^{5444404254521} is an apocalyptic number.

It is an amenable number.

5444404254521 is a deficient number, since it is larger than the sum of its proper divisors (147146060971).

5444404254521 is a wasteful number, since it uses less digits than its factorization.

5444404254521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147146060970.

The product of its (nonzero) digits is 2048000, while the sum is 44.

Adding to 5444404254521 its reverse (1254524044445), we get a palindrome (6698928298966).

The spelling of 5444404254521 in words is "five trillion, four hundred forty-four billion, four hundred four million, two hundred fifty-four thousand, five hundred twenty-one".