6646001142 has 64 divisors (see below), whose sum is σ = 14631321600. Its totient is φ = 1995835680.

The previous prime is 6646001107. The next prime is 6646001143. The reversal of 6646001142 is 2411006466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646001143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4240443 + ... + 4242009.

It is an arithmetic number, because the mean of its divisors is an integer number (228614400).

Almost surely, 2^6646001142 is an apocalyptic number.

6646001142 is an abundant number, since it is smaller than the sum of its proper divisors (7985320458).

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

6646001142 is a wasteful number, since it uses less digits than its factorization.

6646001142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 6646001142 is about 81523.0098929131. The cubic root of 6646001142 is about 1880.1253445551.

The spelling of 6646001142 in words is "six billion, six hundred forty-six million, one thousand, one hundred forty-two".