253701813643 has 2 divisors, whose sum is σ = 253701813644. Its totient is φ = 253701813642.

The previous prime is 253701813641. The next prime is 253701813689. The reversal of 253701813643 is 346318107352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253701813643 - 2¹ = 253701813641 is a prime.

It is a super-2 number, since 2×253701813643² (a number of 24 digits) contains 22 as substring.

Together with 253701813641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253701813643.

It is not a weakly prime, because it can be changed into another prime (253701813641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126850906821 + 126850906822.

It is an arithmetic number, because the mean of its divisors is an integer number (126850906822).

Almost surely, 2^253701813643 is an apocalyptic number.

253701813643 is a deficient number, since it is larger than the sum of its proper divisors (1).

253701813643 is an equidigital number, since it uses as much as digits as its factorization.

253701813643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 253701813643 in words is "two hundred fifty-three billion, seven hundred one million, eight hundred thirteen thousand, six hundred forty-three".