6851616399942 has 8 divisors (see below), whose sum is σ = 13703232799896. Its totient is φ = 2283872133312.

The previous prime is 6851616399917. The next prime is 6851616399959. The reversal of 6851616399942 is 2499936161586.

It is a sphenic number, since it is the product of 3 distinct primes.

6851616399942 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570968033323 + ... + 570968033334.

It is an arithmetic number, because the mean of its divisors is an integer number (1712904099987).

Almost surely, 2^{6851616399942} is an apocalyptic number.

6851616399942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6851616399942 is a wasteful number, since it uses less digits than its factorization.

6851616399942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141936066662.

The product of its digits is 151165440, while the sum is 69.

The spelling of 6851616399942 in words is "six trillion, eight hundred fifty-one billion, six hundred sixteen million, three hundred ninety-nine thousand, nine hundred forty-two".