1345615561373 has 2 divisors, whose sum is σ = 1345615561374. Its totient is φ = 1345615561372.

The previous prime is 1345615561363. The next prime is 1345615561427. The reversal of 1345615561373 is 3731655165431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835445356729 + 510170204644 = 914027^2 + 714262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345615561373 - 2⁸ = 1345615561117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345615561343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672807780686 + 672807780687.

It is an arithmetic number, because the mean of its divisors is an integer number (672807780687).

Almost surely, 2^{1345615561373} is an apocalyptic number.

It is an amenable number.

1345615561373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345615561373 is an equidigital number, since it uses as much as digits as its factorization.

1345615561373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 50.

The spelling of 1345615561373 in words is "one trillion, three hundred forty-five billion, six hundred fifteen million, five hundred sixty-one thousand, three hundred seventy-three".