1328523768049 has 2 divisors, whose sum is σ = 1328523768050. Its totient is φ = 1328523768048.

The previous prime is 1328523767953. The next prime is 1328523768079. The reversal of 1328523768049 is 9408673258231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1326486599824 + 2037168225 = 1151732^2 + 45135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328523768049 - 2¹¹ = 1328523766001 is a prime.

It is a super-2 number, since 2×1328523768049² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1328523767984 and 1328523768002.

It is not a weakly prime, because it can be changed into another prime (1328523768079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664261884024 + 664261884025.

It is an arithmetic number, because the mean of its divisors is an integer number (664261884025).

It is a 1-persistent number, because it is pandigital, but 2⋅1328523768049 = 2657047536098 is not.

Almost surely, 2^{1328523768049} is an apocalyptic number.

It is an amenable number.

1328523768049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328523768049 is an equidigital number, since it uses as much as digits as its factorization.

1328523768049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 1328523768049 in words is "one trillion, three hundred twenty-eight billion, five hundred twenty-three million, seven hundred sixty-eight thousand, forty-nine".