1291330145143 has 4 divisors (see below), whose sum is σ = 1296969141640. Its totient is φ = 1285691148648.

The previous prime is 1291330145099. The next prime is 1291330145179. The reversal of 1291330145143 is 3415410331921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1291330145143 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 (1291330143143) 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, 2819497905 + ... + 2819498362.

It is an arithmetic number, because the mean of its divisors is an integer number (324242285410).

Almost surely, 2^{1291330145143} is an apocalyptic number.

1291330145143 is a deficient number, since it is larger than the sum of its proper divisors (5638996497).

1291330145143 is an equidigital number, since it uses as much as digits as its factorization.

1291330145143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638996496.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1291330145143 in words is "one trillion, two hundred ninety-one billion, three hundred thirty million, one hundred forty-five thousand, one hundred forty-three".