6699550000 has 240 divisors, whose sum is σ = 19081216224. Its totient is φ = 2246400000.

The previous prime is 6699549979. The next prime is 6699550007. The reversal of 6699550000 is 559966.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6699550007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7149532 + ... + 7150468.

Almost surely, 2^6699550000 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 6699550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9540608112).

6699550000 is an abundant number, since it is smaller than the sum of its proper divisors (12381666224).

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

6699550000 is a wasteful number, since it uses less digits than its factorization.

6699550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 6699550000 is about 81850.7788600695. The cubic root of 6699550000 is about 1885.1614240246.

The spelling of 6699550000 in words is "six billion, six hundred ninety-nine million, five hundred fifty thousand".