6599145920 has 112 divisors (see below), whose sum is σ = 16313920128. Its totient is φ = 2540789760.

The previous prime is 6599145919. The next prime is 6599146019. The reversal of 6599145920 is 295419956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913844 + ... + 921036.

Almost surely, 2^6599145920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6599145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8156960064).

6599145920 is an abundant number, since it is smaller than the sum of its proper divisors (9714774208).

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

6599145920 is a wasteful number, since it uses less digits than its factorization.

6599145920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318 (or 7308 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 50.

The square root of 6599145920 is about 81235.1273772621. The cubic root of 6599145920 is about 1875.6965395528.

The spelling of 6599145920 in words is "six billion, five hundred ninety-nine million, one hundred forty-five thousand, nine hundred twenty".