7959856505 has 8 divisors (see below), whose sum is σ = 9686361024. Its totient is φ = 6278196400.

The previous prime is 7959856477. The next prime is 7959856579. The reversal of 7959856505 is 5056589597.

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

It is not a de Polignac number, because 7959856505 - 2⁶ = 7959856441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11210711 + ... + 11211420.

It is an arithmetic number, because the mean of its divisors is an integer number (1210795128).

Almost surely, 2^7959856505 is an apocalyptic number.

It is an amenable number.

7959856505 is a deficient number, since it is larger than the sum of its proper divisors (1726504519).

7959856505 is a wasteful number, since it uses less digits than its factorization.

7959856505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22422207.

The product of its (nonzero) digits is 17010000, while the sum is 59.

The square root of 7959856505 is about 89218.0279147662. The cubic root of 7959856505 is about 1996.6490976121.

The spelling of 7959856505 in words is "seven billion, nine hundred fifty-nine million, eight hundred fifty-six thousand, five hundred five".