8108780564 has 12 divisors (see below), whose sum is σ = 15025093524. Its totient is φ = 3815896704.

The previous prime is 8108780549. The next prime is 8108780573. The reversal of 8108780564 is 4650878018.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7077856900 + 1030923664 = 84130^2 + 32108^2 .

It is a congruent 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, 59623319 + ... + 59623454.

It is an arithmetic number, because the mean of its divisors is an integer number (1252091127).

Almost surely, 2^8108780564 is an apocalyptic number.

It is an amenable number.

8108780564 is a deficient number, since it is larger than the sum of its proper divisors (6916312960).

8108780564 is a wasteful number, since it uses less digits than its factorization.

8108780564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119246794 (or 119246792 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The square root of 8108780564 is about 90048.7676983977. The cubic root of 8108780564 is about 2009.0242670593.

The spelling of 8108780564 in words is "eight billion, one hundred eight million, seven hundred eighty thousand, five hundred sixty-four".