1445857457143 has 6 divisors (see below), whose sum is σ = 1589248279472. Its totient is φ = 1314415870020.

The previous prime is 1445857457131. The next prime is 1445857457153. The reversal of 1445857457143 is 3417547585441.

It is not a de Polignac number, because 1445857457143 - 2⁵ = 1445857457111 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 (1445857457113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5974617471 + ... + 5974617712.

Almost surely, 2^{1445857457143} is an apocalyptic number.

1445857457143 is a deficient number, since it is larger than the sum of its proper divisors (143390822329).

1445857457143 is a wasteful number, since it uses less digits than its factorization.

1445857457143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11949235205 (or 11949235194 counting only the distinct ones).

The product of its digits is 37632000, while the sum is 58.

The spelling of 1445857457143 in words is "one trillion, four hundred forty-five billion, eight hundred fifty-seven million, four hundred fifty-seven thousand, one hundred forty-three".