1373894729497 has 2 divisors, whose sum is σ = 1373894729498. Its totient is φ = 1373894729496.

The previous prime is 1373894729477. The next prime is 1373894729521. The reversal of 1373894729497 is 7949274983731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077736735881 + 296157993616 = 1038141^2 + 544204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373894729497 - 2⁷ = 1373894729369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373894729477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686947364748 + 686947364749.

It is an arithmetic number, because the mean of its divisors is an integer number (686947364749).

Almost surely, 2^{1373894729497} is an apocalyptic number.

It is an amenable number.

1373894729497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373894729497 is an equidigital number, since it uses as much as digits as its factorization.

1373894729497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576108288, while the sum is 73.

The spelling of 1373894729497 in words is "one trillion, three hundred seventy-three billion, eight hundred ninety-four million, seven hundred twenty-nine thousand, four hundred ninety-seven".