7206875528581 has 2 divisors, whose sum is σ = 7206875528582. Its totient is φ = 7206875528580.

The previous prime is 7206875528579. The next prime is 7206875528603. The reversal of 7206875528581 is 1858255786027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6298744672900 + 908130855681 = 2509730^2 + 952959^2 .

It is a cyclic number.

It is not a de Polignac number, because 7206875528581 - 2¹ = 7206875528579 is a prime.

It is a super-2 number, since 2×7206875528581² (a number of 27 digits) contains 22 as substring.

Together with 7206875528579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7206875525581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3603437764290 + 3603437764291.

It is an arithmetic number, because the mean of its divisors is an integer number (3603437764291).

Almost surely, 2^{7206875528581} is an apocalyptic number.

It is an amenable number.

7206875528581 is a deficient number, since it is larger than the sum of its proper divisors (1).

7206875528581 is an equidigital number, since it uses as much as digits as its factorization.

7206875528581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264000, while the sum is 64.

The spelling of 7206875528581 in words is "seven trillion, two hundred six billion, eight hundred seventy-five million, five hundred twenty-eight thousand, five hundred eighty-one".