140168815887 has 16 divisors (see below), whose sum is σ = 193144357728. Its totient is φ = 90359915520.

The previous prime is 140168815879. The next prime is 140168815903. The reversal of 140168815887 is 788518861041.

It is not a de Polignac number, because 140168815887 - 2³ = 140168815879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140168815487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5028508 + ... + 5056305.

It is an arithmetic number, because the mean of its divisors is an integer number (12071522358).

Almost surely, 2^140168815887 is an apocalyptic number.

140168815887 is a deficient number, since it is larger than the sum of its proper divisors (52975541841).

140168815887 is a wasteful number, since it uses less digits than its factorization.

140168815887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084970.

The product of its (nonzero) digits is 3440640, while the sum is 57.

The spelling of 140168815887 in words is "one hundred forty billion, one hundred sixty-eight million, eight hundred fifteen thousand, eight hundred eighty-seven".