1345801847569 has 27 divisors (see below), whose sum is σ = 1410557052177. Its totient is φ = 1283965730208.

The previous prime is 1345801847549. The next prime is 1345801847573. The reversal of 1345801847569 is 9657481085431.

The square root of 1345801847569 is 1160087.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 68088117969 + 1277713729600 = 260937^2 + 1130360^2 .

It is not a de Polignac number, because 1345801847569 - 2¹⁵ = 1345801814801 is a prime.

It is a super-2 number, since 2×1345801847569² (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 (1345801847549) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3667034824 + ... + 3667035190.

Almost surely, 2^{1345801847569} is an apocalyptic number.

1345801847569 is the 1160087-th square number.

1345801847569 is the 580044-th centered octagonal number.

It is an amenable number.

1345801847569 is a deficient number, since it is larger than the sum of its proper divisors (64755204608).

1345801847569 is an frugal number, since it uses more digits than its factorization.

1345801847569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 1345801847569 in words is "one trillion, three hundred forty-five billion, eight hundred one million, eight hundred forty-seven thousand, five hundred sixty-nine".