1345630616521 has 8 divisors (see below), whose sum is σ = 1348297542720. Its totient is φ = 1342964673072.

The previous prime is 1345630616501. The next prime is 1345630616549. The reversal of 1345630616521 is 1256160365431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1345630616521 - 2⁹ = 1345630616009 is a prime.

It is a super-2 number, since 2×1345630616521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345630616501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526451 + ... + 3012343.

It is an arithmetic number, because the mean of its divisors is an integer number (168537192840).

Almost surely, 2^{1345630616521} is an apocalyptic number.

It is an amenable number.

1345630616521 is a deficient number, since it is larger than the sum of its proper divisors (2666926199).

1345630616521 is an equidigital number, since it uses as much as digits as its factorization.

1345630616521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491375.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 1345630616521 in words is "one trillion, three hundred forty-five billion, six hundred thirty million, six hundred sixteen thousand, five hundred twenty-one".