1345631025493 has 2 divisors, whose sum is σ = 1345631025494. Its totient is φ = 1345631025492.

The previous prime is 1345631025467. The next prime is 1345631025517. The reversal of 1345631025493 is 3945201365431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869962867524 + 475668157969 = 932718^2 + 689687^2 .

It is an emirp because it is prime and its reverse (3945201365431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345631025493 - 2⁵ = 1345631025461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345631025413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672815512746 + 672815512747.

It is an arithmetic number, because the mean of its divisors is an integer number (672815512747).

Almost surely, 2^{1345631025493} is an apocalyptic number.

It is an amenable number.

1345631025493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345631025493 is an equidigital number, since it uses as much as digits as its factorization.

1345631025493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 1345631025493 in words is "one trillion, three hundred forty-five billion, six hundred thirty-one million, twenty-five thousand, four hundred ninety-three".