1296342221375 has 8 divisors (see below), whose sum is σ = 1617835092432. Its totient is φ = 1037073777000.

The previous prime is 1296342221357. The next prime is 1296342221381. The reversal of 1296342221375 is 5731222436921.

It is not a de Polignac number, because 1296342221375 - 2¹⁶ = 1296342155839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5185368761 + ... + 5185369010.

It is an arithmetic number, because the mean of its divisors is an integer number (202229386554).

Almost surely, 2^{1296342221375} is an apocalyptic number.

1296342221375 is a deficient number, since it is larger than the sum of its proper divisors (321492871057).

1296342221375 is an equidigital number, since it uses as much as digits as its factorization.

1296342221375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370737786 (or 10370737776 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The spelling of 1296342221375 in words is "one trillion, two hundred ninety-six billion, three hundred forty-two million, two hundred twenty-one thousand, three hundred seventy-five".