2528611376381 has 2 divisors, whose sum is σ = 2528611376382. Its totient is φ = 2528611376380.

The previous prime is 2528611376353. The next prime is 2528611376387. The reversal of 2528611376381 is 1836731168252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2217731532025 + 310879844356 = 1489205^2 + 557566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2528611376381 is a prime.

It is a super-2 number, since 2×2528611376381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2528611376387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1264305688190 + 1264305688191.

It is an arithmetic number, because the mean of its divisors is an integer number (1264305688191).

Almost surely, 2^{2528611376381} is an apocalyptic number.

It is an amenable number.

2528611376381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2528611376381 is an equidigital number, since it uses as much as digits as its factorization.

2528611376381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The spelling of 2528611376381 in words is "two trillion, five hundred twenty-eight billion, six hundred eleven million, three hundred seventy-six thousand, three hundred eighty-one".