68849384045551 has 8 divisors (see below), whose sum is σ = 69198048727200. Its totient is φ = 68500746243072.

The previous prime is 68849384045531. The next prime is 68849384045569. The reversal of 68849384045551 is 15554048394886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68849384045551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68849384045521) 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, 1573990 + ... + 11839603.

It is an arithmetic number, because the mean of its divisors is an integer number (8649756090900).

Almost surely, 2^{68849384045551} is an apocalyptic number.

68849384045551 is a deficient number, since it is larger than the sum of its proper divisors (348664681649).

68849384045551 is a wasteful number, since it uses less digits than its factorization.

68849384045551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439585.

The product of its (nonzero) digits is 663552000, while the sum is 70.

The spelling of 68849384045551 in words is "sixty-eight trillion, eight hundred forty-nine billion, three hundred eighty-four million, forty-five thousand, five hundred fifty-one".