1373545165549 has 2 divisors, whose sum is σ = 1373545165550. Its totient is φ = 1373545165548.

The previous prime is 1373545165537. The next prime is 1373545165591. The reversal of 1373545165549 is 9455615453731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236288253225 + 137256912324 = 1111885^2 + 370482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373545165549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1373545165493 and 1373545165502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1373545165249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686772582774 + 686772582775.

It is an arithmetic number, because the mean of its divisors is an integer number (686772582775).

Almost surely, 2^{1373545165549} is an apocalyptic number.

It is an amenable number.

1373545165549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373545165549 is an equidigital number, since it uses as much as digits as its factorization.

1373545165549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020000, while the sum is 58.

The spelling of 1373545165549 in words is "one trillion, three hundred seventy-three billion, five hundred forty-five million, one hundred sixty-five thousand, five hundred forty-nine".