7847485761 has 4 divisors (see below), whose sum is σ = 10463314352. Its totient is φ = 5231657172.

The previous prime is 7847485729. The next prime is 7847485771. The reversal of 7847485761 is 1675847487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1675847487 = 3 ⋅558615829.

It is not a de Polignac number, because 7847485761 - 2⁵ = 7847485729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7847485771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1307914291 + ... + 1307914296.

It is an arithmetic number, because the mean of its divisors is an integer number (2615828588).

Almost surely, 2^7847485761 is an apocalyptic number.

It is an amenable number.

7847485761 is a deficient number, since it is larger than the sum of its proper divisors (2615828591).

7847485761 is a wasteful number, since it uses less digits than its factorization.

7847485761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615828590.

The product of its digits is 10536960, while the sum is 57.

The square root of 7847485761 is about 88586.0359255340. The cubic root of 7847485761 is about 1987.2088476952.

The spelling of 7847485761 in words is "seven billion, eight hundred forty-seven million, four hundred eighty-five thousand, seven hundred sixty-one".