262720050661 has 2 divisors, whose sum is σ = 262720050662. Its totient is φ = 262720050660.

The previous prime is 262720050647. The next prime is 262720050743. The reversal of 262720050661 is 166050027262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210144312225 + 52575738436 = 458415^2 + 229294^2 .

It is a cyclic number.

It is not a de Polignac number, because 262720050661 - 2⁷ = 262720050533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 262720050661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262720050161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131360025330 + 131360025331.

It is an arithmetic number, because the mean of its divisors is an integer number (131360025331).

Almost surely, 2^262720050661 is an apocalyptic number.

It is an amenable number.

262720050661 is a deficient number, since it is larger than the sum of its proper divisors (1).

262720050661 is an equidigital number, since it uses as much as digits as its factorization.

262720050661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 262720050661 in words is "two hundred sixty-two billion, seven hundred twenty million, fifty thousand, six hundred sixty-one".