1445344644231 has 48 divisors (see below), whose sum is σ = 2257837670400. Its totient is φ = 887845904064.

The previous prime is 1445344644223. The next prime is 1445344644253. The reversal of 1445344644231 is 1324464435441.

1445344644231 is a `hidden beast` number, since 1 + 4 + 4 + 534 + 46 + 4 + 42 + 31 = 666.

It is not a de Polignac number, because 1445344644231 - 2³ = 1445344644223 is a prime.

It is a super-2 number, since 2×1445344644231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445344644631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17465530 + ... + 17548088.

It is an arithmetic number, because the mean of its divisors is an integer number (47038284800).

Almost surely, 2^{1445344644231} is an apocalyptic number.

1445344644231 is a deficient number, since it is larger than the sum of its proper divisors (812493026169).

1445344644231 is a wasteful number, since it uses less digits than its factorization.

1445344644231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85388 (or 85385 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 45.

The spelling of 1445344644231 in words is "one trillion, four hundred forty-five billion, three hundred forty-four million, six hundred forty-four thousand, two hundred thirty-one".