140155891807 has 2 divisors, whose sum is σ = 140155891808. Its totient is φ = 140155891806.

The previous prime is 140155891787. The next prime is 140155891919. The reversal of 140155891807 is 708198551041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140155891807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140155891507) 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 as a sum of consecutive naturals, namely, 70077945903 + 70077945904.

It is an arithmetic number, because the mean of its divisors is an integer number (70077945904).

Almost surely, 2^140155891807 is an apocalyptic number.

140155891807 is a deficient number, since it is larger than the sum of its proper divisors (1).

140155891807 is an equidigital number, since it uses as much as digits as its factorization.

140155891807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 49.

The spelling of 140155891807 in words is "one hundred forty billion, one hundred fifty-five million, eight hundred ninety-one thousand, eight hundred seven".