140140821487 has 2 divisors, whose sum is σ = 140140821488. Its totient is φ = 140140821486.

The previous prime is 140140821463. The next prime is 140140821581. The reversal of 140140821487 is 784128041041.

140140821487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140140821487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140140821437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70070410743 + 70070410744.

It is an arithmetic number, because the mean of its divisors is an integer number (70070410744).

Almost surely, 2^140140821487 is an apocalyptic number.

140140821487 is a deficient number, since it is larger than the sum of its proper divisors (1).

140140821487 is an equidigital number, since it uses as much as digits as its factorization.

140140821487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 140140821487 in words is "one hundred forty billion, one hundred forty million, eight hundred twenty-one thousand, four hundred eighty-seven".