140028178568 has 8 divisors (see below), whose sum is σ = 262552834830. Its totient is φ = 70014089280.

The previous prime is 140028178561. The next prime is 140028178597. The reversal of 140028178568 is 865871820041.

It can be written as a sum of positive squares in only one way, i.e., 120271627204 + 19756551364 = 346802^2 + 140558^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140028178561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8751761153 + ... + 8751761168.

Almost surely, 2^140028178568 is an apocalyptic number.

It is an amenable number.

140028178568 is a deficient number, since it is larger than the sum of its proper divisors (122524656262).

140028178568 is a wasteful number, since it uses less digits than its factorization.

140028178568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17503522327 (or 17503522323 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 140028178568 in words is "one hundred forty billion, twenty-eight million, one hundred seventy-eight thousand, five hundred sixty-eight".