6606121992 has 48 divisors (see below), whose sum is σ = 16908427440. Its totient is φ = 2150815968.

The previous prime is 6606121943. The next prime is 6606121999. The reversal of 6606121992 is 2991216066.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6606121999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30058 + ... + 118809.

It is an arithmetic number, because the mean of its divisors is an integer number (352258905).

Almost surely, 2^6606121992 is an apocalyptic number.

It is an amenable number.

6606121992 is an abundant number, since it is smaller than the sum of its proper divisors (10302305448).

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

6606121992 is a wasteful number, since it uses less digits than its factorization.

6606121992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148962 (or 148915 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 6606121992 is about 81278.0535692139. The cubic root of 6606121992 is about 1876.3572506096.

The spelling of 6606121992 in words is "six billion, six hundred six million, one hundred twenty-one thousand, nine hundred ninety-two".