7068422621581 has 12 divisors (see below), whose sum is σ = 7323627359412. Its totient is φ = 6821830031744.

The previous prime is 7068422621567. The next prime is 7068422621591. The reversal of 7068422621581 is 1851262248607.

It can be written as a sum of positive squares in 6 ways, for example, as 52858608100 + 7015564013481 = 229910^2 + 2648691^2 .

It is not a de Polignac number, because 7068422621581 - 2⁷ = 7068422621453 is a prime.

It is a super-2 number, since 2×7068422621581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7068422621591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256395 + ... + 3768631.

It is an arithmetic number, because the mean of its divisors is an integer number (610302279951).

Almost surely, 2^{7068422621581} is an apocalyptic number.

It is an amenable number.

7068422621581 is a deficient number, since it is larger than the sum of its proper divisors (255204737831).

7068422621581 is a wasteful number, since it uses less digits than its factorization.

7068422621581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514688 (or 3514659 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 7068422621581 in words is "seven trillion, sixty-eight billion, four hundred twenty-two million, six hundred twenty-one thousand, five hundred eighty-one".