253043646377 has 2 divisors, whose sum is σ = 253043646378. Its totient is φ = 253043646376.

The previous prime is 253043646319. The next prime is 253043646397. The reversal of 253043646377 is 773646340352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230069878336 + 22973768041 = 479656^2 + 151571^2 .

It is a cyclic number.

It is not a de Polignac number, because 253043646377 - 2¹⁰ = 253043645353 is a prime.

It is a super-2 number, since 2×253043646377² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253043646397) 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, 126521823188 + 126521823189.

It is an arithmetic number, because the mean of its divisors is an integer number (126521823189).

Almost surely, 2^253043646377 is an apocalyptic number.

It is an amenable number.

253043646377 is a deficient number, since it is larger than the sum of its proper divisors (1).

253043646377 is an equidigital number, since it uses as much as digits as its factorization.

253043646377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 50.

The spelling of 253043646377 in words is "two hundred fifty-three billion, forty-three million, six hundred forty-six thousand, three hundred seventy-seven".