1345687966081 has 4 divisors (see below), whose sum is σ = 1346147718912. Its totient is φ = 1345228213252.

The previous prime is 1345687966061. The next prime is 1345687966127. The reversal of 1345687966081 is 1806697865431.

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 not a de Polignac number, because 1345687966081 - 2¹⁹ = 1345687441793 is a prime.

It is a super-2 number, since 2×1345687966081² (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 (1345687966031) 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, 229872025 + ... + 229877878.

It is an arithmetic number, because the mean of its divisors is an integer number (336536929728).

Almost surely, 2^{1345687966081} is an apocalyptic number.

It is an amenable number.

1345687966081 is a deficient number, since it is larger than the sum of its proper divisors (459752831).

1345687966081 is an equidigital number, since it uses as much as digits as its factorization.

1345687966081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459752830.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 1345687966081 in words is "one trillion, three hundred forty-five billion, six hundred eighty-seven million, nine hundred sixty-six thousand, eighty-one".