7718232065 has 8 divisors (see below), whose sum is σ = 9279658728. Its totient is φ = 6162732160.

The previous prime is 7718232059. The next prime is 7718232097. The reversal of 7718232065 is 5602328177.

It can be written as a sum of positive squares in 4 ways, for example, as 1487182096 + 6231049969 = 38564^2 + 78937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7718232065 - 2¹² = 7718227969 is a prime.

It is a super-2 number, since 2×7718232065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478822 + ... + 1484031.

It is an arithmetic number, because the mean of its divisors is an integer number (1159957341).

Almost surely, 2^7718232065 is an apocalyptic number.

It is an amenable number.

7718232065 is a deficient number, since it is larger than the sum of its proper divisors (1561426663).

7718232065 is a wasteful number, since it uses less digits than its factorization.

7718232065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963379.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 7718232065 is about 87853.4692826641. The cubic root of 7718232065 is about 1976.2381438936.

The spelling of 7718232065 in words is "seven billion, seven hundred eighteen million, two hundred thirty-two thousand, sixty-five".