68311881093 has 8 divisors (see below), whose sum is σ = 91087678528. Its totient is φ = 45538668864.

The previous prime is 68311881091. The next prime is 68311881107. The reversal of 68311881093 is 39018811386.

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

It is not a de Polignac number, because 68311881093 - 2¹ = 68311881091 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 (68311881091) 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, 583780 + ... + 690957.

It is an arithmetic number, because the mean of its divisors is an integer number (11385959816).

Almost surely, 2^68311881093 is an apocalyptic number.

It is an amenable number.

68311881093 is a deficient number, since it is larger than the sum of its proper divisors (22775797435).

68311881093 is a wasteful number, since it uses less digits than its factorization.

68311881093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292603.

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 68311881093 in words is "sixty-eight billion, three hundred eleven million, eight hundred eighty-one thousand, ninety-three".