140252262666661 has 2 divisors, whose sum is σ = 140252262666662. Its totient is φ = 140252262666660.

The previous prime is 140252262666643. The next prime is 140252262666673. The reversal of 140252262666661 is 166666262252041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127118995386436 + 13133267280225 = 11274706^2 + 3623985^2 .

It is a cyclic number.

It is not a de Polignac number, because 140252262666661 - 2⁹ = 140252262666149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140252262666161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70126131333330 + 70126131333331.

It is an arithmetic number, because the mean of its divisors is an integer number (70126131333331).

Almost surely, 2^{140252262666661} is an apocalyptic number.

It is an amenable number.

140252262666661 is a deficient number, since it is larger than the sum of its proper divisors (1).

140252262666661 is an equidigital number, since it uses as much as digits as its factorization.

140252262666661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 140252262666661 in words is "one hundred forty trillion, two hundred fifty-two billion, two hundred sixty-two million, six hundred sixty-six thousand, six hundred sixty-one".