168140503903 has 2 divisors, whose sum is σ = 168140503904. Its totient is φ = 168140503902.

The previous prime is 168140503901. The next prime is 168140503969. The reversal of 168140503903 is 309305041861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168140503903 - 2¹ = 168140503901 is a prime.

Together with 168140503901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168140503901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84070251951 + 84070251952.

It is an arithmetic number, because the mean of its divisors is an integer number (84070251952).

Almost surely, 2^168140503903 is an apocalyptic number.

168140503903 is a deficient number, since it is larger than the sum of its proper divisors (1).

168140503903 is an equidigital number, since it uses as much as digits as its factorization.

168140503903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 168140503903 in words is "one hundred sixty-eight billion, one hundred forty million, five hundred three thousand, nine hundred three".