140202020561 has 2 divisors, whose sum is σ = 140202020562. Its totient is φ = 140202020560.

The previous prime is 140202020551. The next prime is 140202020599. The reversal of 140202020561 is 165020202041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101847148225 + 38354872336 = 319135^2 + 195844^2 .

It is a cyclic number.

It is not a de Polignac number, because 140202020561 - 2¹⁴ = 140202004177 is a prime.

It is not a weakly prime, because it can be changed into another prime (140202020551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70101010280 + 70101010281.

It is an arithmetic number, because the mean of its divisors is an integer number (70101010281).

Almost surely, 2^140202020561 is an apocalyptic number.

It is an amenable number.

140202020561 is a deficient number, since it is larger than the sum of its proper divisors (1).

140202020561 is an equidigital number, since it uses as much as digits as its factorization.

140202020561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 140202020561 in words is "one hundred forty billion, two hundred two million, twenty thousand, five hundred sixty-one".