1345440511573 has 2 divisors, whose sum is σ = 1345440511574. Its totient is φ = 1345440511572.

The previous prime is 1345440511523. The next prime is 1345440511579. The reversal of 1345440511573 is 3751150445431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146597648849 + 198842862724 = 1070793^2 + 445918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345440511573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345440511579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672720255786 + 672720255787.

It is an arithmetic number, because the mean of its divisors is an integer number (672720255787).

Almost surely, 2^{1345440511573} is an apocalyptic number.

It is an amenable number.

1345440511573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345440511573 is an equidigital number, since it uses as much as digits as its factorization.

1345440511573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 1345440511573 in words is "one trillion, three hundred forty-five billion, four hundred forty million, five hundred eleven thousand, five hundred seventy-three".