1345566626621 has 16 divisors (see below), whose sum is σ = 1553723767680. Its totient is φ = 1141394042880.

The previous prime is 1345566626617. The next prime is 1345566626647. The reversal of 1345566626621 is 1266266655431.

It is not a de Polignac number, because 1345566626621 - 2² = 1345566626617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345566626681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17758106 + ... + 17833716.

It is an arithmetic number, because the mean of its divisors is an integer number (97107735480).

Almost surely, 2^{1345566626621} is an apocalyptic number.

It is an amenable number.

1345566626621 is a deficient number, since it is larger than the sum of its proper divisors (208157141059).

1345566626621 is an equidigital number, since it uses as much as digits as its factorization.

1345566626621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101924.

The product of its digits is 9331200, while the sum is 53.

The spelling of 1345566626621 in words is "one trillion, three hundred forty-five billion, five hundred sixty-six million, six hundred twenty-six thousand, six hundred twenty-one".