7917165505 has 4 divisors (see below), whose sum is σ = 9500598612. Its totient is φ = 6333732400.

The previous prime is 7917165491. The next prime is 7917165521. The reversal of 7917165505 is 5055617197.

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 5717930689 + 2199234816 = 75617^2 + 46896^2 .

It is not a de Polignac number, because 7917165505 - 2¹⁵ = 7917132737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791716546 + ... + 791716555.

It is an arithmetic number, because the mean of its divisors is an integer number (2375149653).

Almost surely, 2^7917165505 is an apocalyptic number.

It is an amenable number.

7917165505 is a deficient number, since it is larger than the sum of its proper divisors (1583433107).

7917165505 is a wasteful number, since it uses less digits than its factorization.

7917165505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583433106.

The product of its (nonzero) digits is 330750, while the sum is 46.

The square root of 7917165505 is about 88978.4552855353. The cubic root of 7917165505 is about 1993.0731625747.

The spelling of 7917165505 in words is "seven billion, nine hundred seventeen million, one hundred sixty-five thousand, five hundred five".