140021784157289 has 2 divisors, whose sum is σ = 140021784157290. Its totient is φ = 140021784157288.

The previous prime is 140021784157259. The next prime is 140021784157309. The reversal of 140021784157289 is 982751487120041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140019415680400 + 2368476889 = 11832980^2 + 48667^2 .

It is an emirp because it is prime and its reverse (982751487120041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140021784157289 is a prime.

It is a super-2 number, since 2×140021784157289² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140021784157259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70010892078644 + 70010892078645.

It is an arithmetic number, because the mean of its divisors is an integer number (70010892078645).

Almost surely, 2^{140021784157289} is an apocalyptic number.

It is an amenable number.

140021784157289 is a deficient number, since it is larger than the sum of its proper divisors (1).

140021784157289 is an equidigital number, since it uses as much as digits as its factorization.

140021784157289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 140021784157289 in words is "one hundred forty trillion, twenty-one billion, seven hundred eighty-four million, one hundred fifty-seven thousand, two hundred eighty-nine".