254240167630261 has 2 divisors, whose sum is σ = 254240167630262. Its totient is φ = 254240167630260.

The previous prime is 254240167630249. The next prime is 254240167630277. The reversal of 254240167630261 is 162036761042452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158796920146225 + 95443247484036 = 12601465^2 + 9769506^2 .

It is a cyclic number.

It is not a de Polignac number, because 254240167630261 - 2³¹ = 254238020146613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254240167630201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127120083815130 + 127120083815131.

It is an arithmetic number, because the mean of its divisors is an integer number (127120083815131).

Almost surely, 2^{254240167630261} is an apocalyptic number.

It is an amenable number.

254240167630261 is a deficient number, since it is larger than the sum of its proper divisors (1).

254240167630261 is an equidigital number, since it uses as much as digits as its factorization.

254240167630261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 254240167630261 in words is "two hundred fifty-four trillion, two hundred forty billion, one hundred sixty-seven million, six hundred thirty thousand, two hundred sixty-one".