6645007042 has 16 divisors (see below), whose sum is σ = 10180756800. Its totient is φ = 3251913840.

The previous prime is 6645007007. The next prime is 6645007043. The reversal of 6645007042 is 2407005466.

It is a super-2 number, since 2×6645007042² = 88312237176459179528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6645006989 and 6645007007.

It is not an unprimeable number, because it can be changed into a prime (6645007043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95934 + ... + 149977.

It is an arithmetic number, because the mean of its divisors is an integer number (636297300).

Almost surely, 2^6645007042 is an apocalyptic number.

6645007042 is a deficient number, since it is larger than the sum of its proper divisors (3535749758).

6645007042 is a wasteful number, since it uses less digits than its factorization.

6645007042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246201.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 6645007042 is about 81516.9126132731. The cubic root of 6645007042 is about 1880.0315976657.

The spelling of 6645007042 in words is "six billion, six hundred forty-five million, seven thousand, forty-two".