6641974742 has 24 divisors (see below), whose sum is σ = 11323783296. Its totient is φ = 2904179184.

The previous prime is 6641974741. The next prime is 6641974751. The reversal of 6641974742 is 2474791466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641974741) 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, 344438 + ... + 363209.

It is an arithmetic number, because the mean of its divisors is an integer number (471824304).

Almost surely, 2^6641974742 is an apocalyptic number.

6641974742 is a deficient number, since it is larger than the sum of its proper divisors (4681808554).

6641974742 is a wasteful number, since it uses less digits than its factorization.

6641974742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707700 (or 707681 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The square root of 6641974742 is about 81498.3112831180. The cubic root of 6641974742 is about 1879.7455840646.

The spelling of 6641974742 in words is "six billion, six hundred forty-one million, nine hundred seventy-four thousand, seven hundred forty-two".