6641442542 has 16 divisors (see below), whose sum is σ = 11752599552. Its totient is φ = 2754515160.

The previous prime is 6641442499. The next prime is 6641442553. The reversal of 6641442542 is 2452441466.

It is a junction number, because it is equal to n+sod(n) for n = 6641442496 and 6641442505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7650998 + ... + 7651865.

It is an arithmetic number, because the mean of its divisors is an integer number (734537472).

Almost surely, 2^6641442542 is an apocalyptic number.

6641442542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6641442542 is a deficient number, since it is larger than the sum of its proper divisors (5111157010).

6641442542 is a wasteful number, since it uses less digits than its factorization.

6641442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15302903.

The product of its digits is 184320, while the sum is 38.

The square root of 6641442542 is about 81495.0461193808. The cubic root of 6641442542 is about 1879.6953767412.

The spelling of 6641442542 in words is "six billion, six hundred forty-one million, four hundred forty-two thousand, five hundred forty-two".