8121635160 has 64 divisors (see below), whose sum is σ = 24764352480. Its totient is φ = 2130263040.

The previous prime is 8121635149. The next prime is 8121635167. The reversal of 8121635160 is 615361218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121635167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547437 + ... + 562076.

Almost surely, 2^8121635160 is an apocalyptic number.

It is an amenable number.

8121635160 is an abundant number, since it is smaller than the sum of its proper divisors (16642717320).

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

8121635160 is a wasteful number, since it uses less digits than its factorization.

8121635160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109588 (or 1109584 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 8121635160 is about 90120.1151796867. The cubic root of 8121635160 is about 2010.0853209989.

Adding to 8121635160 its reverse (615361218), we get a palindrome (8736996378).

The spelling of 8121635160 in words is "eight billion, one hundred twenty-one million, six hundred thirty-five thousand, one hundred sixty".