7665225777709 has 4 divisors (see below), whose sum is σ = 7707575091580. Its totient is φ = 7622876463840.

The previous prime is 7665225777707. The next prime is 7665225777733. The reversal of 7665225777709 is 9077775225667.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2618813975625 + 5046411802084 = 1618275^2 + 2246422^2 .

It is a cyclic number.

It is not a de Polignac number, because 7665225777709 - 2¹ = 7665225777707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7665225777707) 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, 21174656664 + ... + 21174657025.

It is an arithmetic number, because the mean of its divisors is an integer number (1926893772895).

Almost surely, 2^{7665225777709} is an apocalyptic number.

It is an amenable number.

7665225777709 is a deficient number, since it is larger than the sum of its proper divisors (42349313871).

7665225777709 is a wasteful number, since it uses less digits than its factorization.

7665225777709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42349313870.

The product of its (nonzero) digits is 544546800, while the sum is 70.

The spelling of 7665225777709 in words is "seven trillion, six hundred sixty-five billion, two hundred twenty-five million, seven hundred seventy-seven thousand, seven hundred nine".