7123657065 has 16 divisors (see below), whose sum is σ = 13026115968. Its totient is φ = 3256528896.

The previous prime is 7123657003. The next prime is 7123657097. The reversal of 7123657065 is 5607563217.

It is not a de Polignac number, because 7123657065 - 2⁷ = 7123656937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33922072 + ... + 33922281.

It is an arithmetic number, because the mean of its divisors is an integer number (814132248).

Almost surely, 2^7123657065 is an apocalyptic number.

It is an amenable number.

7123657065 is a deficient number, since it is larger than the sum of its proper divisors (5902458903).

7123657065 is a wasteful number, since it uses less digits than its factorization.

7123657065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67844368.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 7123657065 is about 84401.7598453966. The cubic root of 7123657065 is about 1924.1296624428.

The spelling of 7123657065 in words is "seven billion, one hundred twenty-three million, six hundred fifty-seven thousand, sixty-five".