68704044081 has 8 divisors (see below), whose sum is σ = 93735750240. Its totient is φ = 44737516992.

The previous prime is 68704044053. The next prime is 68704044139. The reversal of 68704044081 is 18044040786.

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 68704044081 - 2¹³ = 68704035889 is a prime.

It is a super-2 number, since 2×68704044081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68704044481) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 266294616 + ... + 266294873.

It is an arithmetic number, because the mean of its divisors is an integer number (11716968780).

Almost surely, 2^68704044081 is an apocalyptic number.

It is an amenable number.

68704044081 is a deficient number, since it is larger than the sum of its proper divisors (25031706159).

68704044081 is a wasteful number, since it uses less digits than its factorization.

68704044081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532589535.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 68704044081 in words is "sixty-eight billion, seven hundred four million, forty-four thousand, eighty-one".