7665642465667 has 4 divisors (see below), whose sum is σ = 7671879767520. Its totient is φ = 7659405163816.

The previous prime is 7665642465653. The next prime is 7665642465671.

7665642465667 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7665642465667 is a prime.

It is a super-2 number, since 2×7665642465667² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7665642465596 and 7665642465605.

It is not an unprimeable number, because it can be changed into a prime (7665642465167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3118649083 + ... + 3118651540.

It is an arithmetic number, because the mean of its divisors is an integer number (1917969941880).

Almost surely, 2^{7665642465667} is an apocalyptic number.

7665642465667 is a deficient number, since it is larger than the sum of its proper divisors (6237301853).

7665642465667 is a wasteful number, since it uses less digits than its factorization.

7665642465667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237301852.

The product of its digits is 1828915200, while the sum is 70.

The spelling of 7665642465667 in words is "seven trillion, six hundred sixty-five billion, six hundred forty-two million, four hundred sixty-five thousand, six hundred sixty-seven".