1345631025913 has 2 divisors, whose sum is σ = 1345631025914. Its totient is φ = 1345631025912.

The previous prime is 1345631025901. The next prime is 1345631025971. The reversal of 1345631025913 is 3195201365431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979155767529 + 366475258384 = 989523^2 + 605372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345631025913 - 2¹³ = 1345631017721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345631025913.

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, 672815512956 + 672815512957.

It is an arithmetic number, because the mean of its divisors is an integer number (672815512957).

Almost surely, 2^{1345631025913} is an apocalyptic number.

It is an amenable number.

1345631025913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345631025913 is an equidigital number, since it uses as much as digits as its factorization.

1345631025913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 1345631025913 in words is "one trillion, three hundred forty-five billion, six hundred thirty-one million, twenty-five thousand, nine hundred thirteen".