7465555649 has 2 divisors, whose sum is σ = 7465555650. Its totient is φ = 7465555648.

The previous prime is 7465555607. The next prime is 7465555651. The reversal of 7465555649 is 9465555647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6398880049 + 1066675600 = 79993^2 + 32660^2 .

It is a cyclic number.

It is not a de Polignac number, because 7465555649 - 2⁸ = 7465555393 is a prime.

It is a super-2 number, since 2×7465555649² (a number of 21 digits) contains 22 as substring.

Together with 7465555651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7465555594 and 7465555603.

It is not a weakly prime, because it can be changed into another prime (7465555549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3732777824 + 3732777825.

It is an arithmetic number, because the mean of its divisors is an integer number (3732777825).

Almost surely, 2^7465555649 is an apocalyptic number.

It is an amenable number.

7465555649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7465555649 is an equidigital number, since it uses as much as digits as its factorization.

7465555649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680000, while the sum is 56.

The square root of 7465555649 is about 86403.4469740646. The cubic root of 7465555649 is about 1954.4326643090.

The spelling of 7465555649 in words is "seven billion, four hundred sixty-five million, five hundred fifty-five thousand, six hundred forty-nine".