1287295975434 has 16 divisors (see below), whose sum is σ = 2942390801088. Its totient is φ = 367798850112.

The previous prime is 1287295975429. The next prime is 1287295975439. The reversal of 1287295975434 is 4345795927821.

It is an interprime number because it is at equal distance from previous prime (1287295975429) and next prime (1287295975439).

It is not an unprimeable number, because it can be changed into a prime (1287295975439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15324952047 + ... + 15324952130.

It is an arithmetic number, because the mean of its divisors is an integer number (183899425068).

Almost surely, 2^{1287295975434} is an apocalyptic number.

1287295975434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1287295975434 is an abundant number, since it is smaller than the sum of its proper divisors (1655094825654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1287295975434 is a wasteful number, since it uses less digits than its factorization.

1287295975434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30649904189.

The product of its digits is 152409600, while the sum is 66.

The spelling of 1287295975434 in words is "one trillion, two hundred eighty-seven billion, two hundred ninety-five million, nine hundred seventy-five thousand, four hundred thirty-four".