6986643433538 has 32 divisors (see below), whose sum is σ = 11042419654656. Its totient is φ = 3308807378448.

The previous prime is 6986643433529. The next prime is 6986643433543. The reversal of 6986643433538 is 8353343466896.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116633831 + ... + 116693717.

It is an arithmetic number, because the mean of its divisors is an integer number (345075614208).

Almost surely, 2^{6986643433538} is an apocalyptic number.

6986643433538 is a deficient number, since it is larger than the sum of its proper divisors (4055776221118).

6986643433538 is a wasteful number, since it uses less digits than its factorization.

6986643433538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84638.

The product of its digits is 806215680, while the sum is 68.

The spelling of 6986643433538 in words is "six trillion, nine hundred eighty-six billion, six hundred forty-three million, four hundred thirty-three thousand, five hundred thirty-eight".