1444740438135 has 32 divisors (see below), whose sum is σ = 2447626410432. Its totient is φ = 725183447040.

The previous prime is 1444740438133. The next prime is 1444740438143. The reversal of 1444740438135 is 5318340474441.

It is not a de Polignac number, because 1444740438135 - 2¹ = 1444740438133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444740438131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15922095 + ... + 16012575.

It is an arithmetic number, because the mean of its divisors is an integer number (76488325326).

Almost surely, 2^{1444740438135} is an apocalyptic number.

1444740438135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1444740438135 is a deficient number, since it is larger than the sum of its proper divisors (1002885972297).

1444740438135 is a wasteful number, since it uses less digits than its factorization.

1444740438135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153123.

The product of its (nonzero) digits is 2580480, while the sum is 48.

The spelling of 1444740438135 in words is "one trillion, four hundred forty-four billion, seven hundred forty million, four hundred thirty-eight thousand, one hundred thirty-five".