68148382139 has 4 divisors (see below), whose sum is σ = 68599696080. Its totient is φ = 67697068200.

The previous prime is 68148382129. The next prime is 68148382147. The reversal of 68148382139 is 93128384186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68148382139 - 2¹⁶ = 68148316603 is a prime.

It is a super-3 number, since 3×68148382139³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68148382109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225656744 + ... + 225657045.

It is an arithmetic number, because the mean of its divisors is an integer number (17149924020).

Almost surely, 2^68148382139 is an apocalyptic number.

68148382139 is a deficient number, since it is larger than the sum of its proper divisors (451313941).

68148382139 is a wasteful number, since it uses less digits than its factorization.

68148382139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451313940.

The product of its digits is 1990656, while the sum is 53.

The spelling of 68148382139 in words is "sixty-eight billion, one hundred forty-eight million, three hundred eighty-two thousand, one hundred thirty-nine".