8133993720 has 96 divisors (see below), whose sum is σ = 26454870000. Its totient is φ = 2167474176.

The previous prime is 8133993713. The next prime is 8133993737. The reversal of 8133993720 is 273993318.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 532104 + ... + 547176.

Almost surely, 2^8133993720 is an apocalyptic number.

It is an amenable number.

8133993720 is an abundant number, since it is smaller than the sum of its proper divisors (18320876280).

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

8133993720 is a wasteful number, since it uses less digits than its factorization.

8133993720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16589 (or 16582 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 8133993720 is about 90188.6562711741. The cubic root of 8133993720 is about 2011.1043756500.

The spelling of 8133993720 in words is "eight billion, one hundred thirty-three million, nine hundred ninety-three thousand, seven hundred twenty".