6565115651 has 2 divisors, whose sum is σ = 6565115652. Its totient is φ = 6565115650.

The previous prime is 6565115639. The next prime is 6565115677. The reversal of 6565115651 is 1565115656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6565115651 - 2⁶ = 6565115587 is a prime.

It is a super-2 number, since 2×6565115651² = 86201487022010307602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6565115599 and 6565115608.

It is not a weakly prime, because it can be changed into another prime (6565115621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282557825 + 3282557826.

It is an arithmetic number, because the mean of its divisors is an integer number (3282557826).

Almost surely, 2^6565115651 is an apocalyptic number.

6565115651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6565115651 is an equidigital number, since it uses as much as digits as its factorization.

6565115651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135000, while the sum is 41.

The square root of 6565115651 is about 81025.4012702190. The cubic root of 6565115651 is about 1872.4668037844.

The spelling of 6565115651 in words is "six billion, five hundred sixty-five million, one hundred fifteen thousand, six hundred fifty-one".