68181051 has 8 divisors (see below), whose sum is σ = 92153680. Its totient is φ = 44831232.

The previous prime is 68181019. The next prime is 68181053. The reversal of 68181051 is 15018186.

It is a happy number.

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

It is not a de Polignac number, because 68181051 - 2⁵ = 68181019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68181053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155446 + ... + 155883.

It is an arithmetic number, because the mean of its divisors is an integer number (11519210).

Almost surely, 2^68181051 is an apocalyptic number.

68181051 is a deficient number, since it is larger than the sum of its proper divisors (23972629).

68181051 is a wasteful number, since it uses less digits than its factorization.

68181051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311405.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 68181051 is about 8257.1817831510. The cubic root of 68181051 is about 408.5274380599.

The spelling of 68181051 in words is "sixty-eight million, one hundred eighty-one thousand, fifty-one".