2511260345521 has 2 divisors, whose sum is σ = 2511260345522. Its totient is φ = 2511260345520.

The previous prime is 2511260345459. The next prime is 2511260345543. The reversal of 2511260345521 is 1255430621152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2452168083600 + 59092261921 = 1565940^2 + 243089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2511260345521 - 2²⁷ = 2511126127793 is a prime.

It is a super-2 number, since 2×2511260345521² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2511260345221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255630172760 + 1255630172761.

It is an arithmetic number, because the mean of its divisors is an integer number (1255630172761).

Almost surely, 2^{2511260345521} is an apocalyptic number.

It is an amenable number.

2511260345521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2511260345521 is an equidigital number, since it uses as much as digits as its factorization.

2511260345521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 2511260345521 its reverse (1255430621152), we get a palindrome (3766690966673).

The spelling of 2511260345521 in words is "two trillion, five hundred eleven billion, two hundred sixty million, three hundred forty-five thousand, five hundred twenty-one".