68140748008 has 8 divisors (see below), whose sum is σ = 127763902530. Its totient is φ = 34070374000.

The previous prime is 68140747943. The next prime is 68140748009. The reversal of 68140748008 is 80084704186.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49649643684 + 18491104324 = 222822^2 + 135982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68140748009) 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 as a sum of consecutive naturals, namely, 4258796743 + ... + 4258796758.

Almost surely, 2^68140748008 is an apocalyptic number.

It is an amenable number.

68140748008 is a deficient number, since it is larger than the sum of its proper divisors (59623154522).

68140748008 is a wasteful number, since it uses less digits than its factorization.

68140748008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517593507 (or 8517593503 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 68140748008 in words is "sixty-eight billion, one hundred forty million, seven hundred forty-eight thousand, eight".