13444542440451 has 16 divisors (see below), whose sum is σ = 19918845217920. Its totient is φ = 8962576239240.

The previous prime is 13444542440449. The next prime is 13444542440491. The reversal of 13444542440451 is 15404424544431.

13444542440451 is a `hidden beast` number, since 13 + 4 + 4 + 4 + 542 + 4 + 40 + 4 + 51 = 666.

It is not a de Polignac number, because 13444542440451 - 2¹ = 13444542440449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13444542440397 and 13444542440406.

It is not an unprimeable number, because it can be changed into a prime (13444542440491) 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, 12011385 + ... + 13082906.

It is an arithmetic number, because the mean of its divisors is an integer number (1244927826120).

Almost surely, 2^{13444542440451} is an apocalyptic number.

13444542440451 is a deficient number, since it is larger than the sum of its proper divisors (6474302777469).

13444542440451 is a wasteful number, since it uses less digits than its factorization.

13444542440451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25114143 (or 25114137 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 45.

Adding to 13444542440451 its reverse (15404424544431), we get a palindrome (28848966984882).

The spelling of 13444542440451 in words is "thirteen trillion, four hundred forty-four billion, five hundred forty-two million, four hundred forty thousand, four hundred fifty-one".