1342312645521 has 16 divisors (see below), whose sum is σ = 1869441125760. Its totient is φ = 855628811520.

The previous prime is 1342312645519. The next prime is 1342312645529. The reversal of 1342312645521 is 1255462132431.

It is not a de Polignac number, because 1342312645521 - 2¹ = 1342312645519 is a prime.

It is a super-2 number, since 2×1342312645521² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1342312645521.

It is not an unprimeable number, because it can be changed into a prime (1342312645529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74888520 + ... + 74906441.

It is an arithmetic number, because the mean of its divisors is an integer number (116840070360).

Almost surely, 2^{1342312645521} is an apocalyptic number.

It is an amenable number.

1342312645521 is a deficient number, since it is larger than the sum of its proper divisors (527128480239).

1342312645521 is a wasteful number, since it uses less digits than its factorization.

1342312645521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149795096.

The product of its digits is 172800, while the sum is 39.

Adding to 1342312645521 its reverse (1255462132431), we get a palindrome (2597774777952).

The spelling of 1342312645521 in words is "one trillion, three hundred forty-two billion, three hundred twelve million, six hundred forty-five thousand, five hundred twenty-one".