8129373216 has 24 divisors (see below), whose sum is σ = 21339604944. Its totient is φ = 2709791040.

The previous prime is 8129373211. The next prime is 8129373223. The reversal of 8129373216 is 6123739218.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (8129373211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42340390 + ... + 42340581.

It is an arithmetic number, because the mean of its divisors is an integer number (889150206).

Almost surely, 2^8129373216 is an apocalyptic number.

It is an amenable number.

8129373216 is an abundant number, since it is smaller than the sum of its proper divisors (13210231728).

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

8129373216 is a wasteful number, since it uses less digits than its factorization.

8129373216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84680984 (or 84680976 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 8129373216 is about 90163.0368610108. The cubic root of 8129373216 is about 2010.7235018265.

The spelling of 8129373216 in words is "eight billion, one hundred twenty-nine million, three hundred seventy-three thousand, two hundred sixteen".