140664639889 has 8 divisors (see below), whose sum is σ = 141017667840. Its totient is φ = 140311695216.

The previous prime is 140664639833. The next prime is 140664639923. The reversal of 140664639889 is 988936466041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 140664639889 - 2¹⁵ = 140664607121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140664639889.

It is not an unprimeable number, because it can be changed into a prime (140664631889) 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, 4666464 + ... + 4696510.

It is an arithmetic number, because the mean of its divisors is an integer number (17627208480).

Almost surely, 2^140664639889 is an apocalyptic number.

It is an amenable number.

140664639889 is a deficient number, since it is larger than the sum of its proper divisors (353027951).

140664639889 is a wasteful number, since it uses less digits than its factorization.

140664639889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41639.

The product of its (nonzero) digits is 53747712, while the sum is 64.

The spelling of 140664639889 in words is "one hundred forty billion, six hundred sixty-four million, six hundred thirty-nine thousand, eight hundred eighty-nine".