7647155845 has 16 divisors (see below), whose sum is σ = 10701561600. Its totient is φ = 5243762832.

The previous prime is 7647155773. The next prime is 7647155863. The reversal of 7647155845 is 5485517467.

It is not a de Polignac number, because 7647155845 - 2⁷ = 7647155717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7647155792 and 7647155801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2227777 + ... + 2231206.

It is an arithmetic number, because the mean of its divisors is an integer number (668847600).

Almost surely, 2^7647155845 is an apocalyptic number.

It is an amenable number.

7647155845 is a deficient number, since it is larger than the sum of its proper divisors (3054405755).

7647155845 is an equidigital number, since it uses as much as digits as its factorization.

7647155845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459009 (or 4458995 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 52.

The square root of 7647155845 is about 87448.0179592425. The cubic root of 7647155845 is about 1970.1531179568.

The spelling of 7647155845 in words is "seven billion, six hundred forty-seven million, one hundred fifty-five thousand, eight hundred forty-five".