1380166137529 has 2 divisors, whose sum is σ = 1380166137530. Its totient is φ = 1380166137528.

The previous prime is 1380166137491. The next prime is 1380166137557. The reversal of 1380166137529 is 9257316610831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791183565225 + 588982572304 = 889485^2 + 767452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380166137529 - 2³⁷ = 1242727184057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380166137569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690083068764 + 690083068765.

It is an arithmetic number, because the mean of its divisors is an integer number (690083068765).

Almost surely, 2^{1380166137529} is an apocalyptic number.

It is an amenable number.

1380166137529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380166137529 is an equidigital number, since it uses as much as digits as its factorization.

1380166137529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 1380166137529 in words is "one trillion, three hundred eighty billion, one hundred sixty-six million, one hundred thirty-seven thousand, five hundred twenty-nine".