1445511231455 has 4 divisors (see below), whose sum is σ = 1734613477752. Its totient is φ = 1156408985160.

The previous prime is 1445511231431. The next prime is 1445511231457. The reversal of 1445511231455 is 5541321155441.

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

It is not a de Polignac number, because 1445511231455 - 2¹⁸ = 1445510969311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445511231457) 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, 144551123141 + ... + 144551123150.

It is an arithmetic number, because the mean of its divisors is an integer number (433653369438).

Almost surely, 2^{1445511231455} is an apocalyptic number.

1445511231455 is a deficient number, since it is larger than the sum of its proper divisors (289102246297).

1445511231455 is an equidigital number, since it uses as much as digits as its factorization.

1445511231455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289102246296.

The product of its digits is 240000, while the sum is 41.

Adding to 1445511231455 its reverse (5541321155441), we get a palindrome (6986832386896).

The spelling of 1445511231455 in words is "one trillion, four hundred forty-five billion, five hundred eleven million, two hundred thirty-one thousand, four hundred fifty-five".