8147810640 has 40 divisors (see below), whose sum is σ = 25258213728. Its totient is φ = 2172749440.

The previous prime is 8147810639. The next prime is 8147810669. The reversal of 8147810640 is 460187418.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16974366 + ... + 16974845.

Almost surely, 2^8147810640 is an apocalyptic number.

8147810640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8147810640 is an abundant number, since it is smaller than the sum of its proper divisors (17110403088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8147810640 is a wasteful number, since it uses less digits than its factorization.

8147810640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33949227 (or 33949221 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 8147810640 is about 90265.2238683315. The cubic root of 8147810640 is about 2012.2424614954.

The spelling of 8147810640 in words is "eight billion, one hundred forty-seven million, eight hundred ten thousand, six hundred forty".