68870444135 has 16 divisors (see below), whose sum is σ = 85831876800. Its totient is φ = 53004923136.

The previous prime is 68870444131. The next prime is 68870444213. The reversal of 68870444135 is 53144407886.

It is a cyclic number.

It is not a de Polignac number, because 68870444135 - 2² = 68870444131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68870444131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2074955 + ... + 2107884.

It is an arithmetic number, because the mean of its divisors is an integer number (5364492300).

Almost surely, 2^68870444135 is an apocalyptic number.

68870444135 is a deficient number, since it is larger than the sum of its proper divisors (16961432665).

68870444135 is a wasteful number, since it uses less digits than its factorization.

68870444135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182970.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 68870444135 in words is "sixty-eight billion, eight hundred seventy million, four hundred forty-four thousand, one hundred thirty-five".