1287444430093 has 4 divisors (see below), whose sum is σ = 1287590093920. Its totient is φ = 1287298766268.

The previous prime is 1287444430067. The next prime is 1287444430121. The reversal of 1287444430093 is 3900344447821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1287444430093 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 (1287444430033) 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, 72818655 + ... + 72836332.

It is an arithmetic number, because the mean of its divisors is an integer number (321897523480).

Almost surely, 2^{1287444430093} is an apocalyptic number.

It is an amenable number.

1287444430093 is a deficient number, since it is larger than the sum of its proper divisors (145663827).

1287444430093 is an equidigital number, since it uses as much as digits as its factorization.

1287444430093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145663826.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 1287444430093 in words is "one trillion, two hundred eighty-seven billion, four hundred forty-four million, four hundred thirty thousand, ninety-three".