253399396493 has 2 divisors, whose sum is σ = 253399396494. Its totient is φ = 253399396492.

The previous prime is 253399396483. The next prime is 253399396529. The reversal of 253399396493 is 394693993352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251484196324 + 1915200169 = 501482^2 + 43763^2 .

It is a cyclic number.

It is not a de Polignac number, because 253399396493 - 2¹⁴ = 253399380109 is a prime.

It is a super-2 number, since 2×253399396493² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253399396483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126699698246 + 126699698247.

It is an arithmetic number, because the mean of its divisors is an integer number (126699698247).

Almost surely, 2^253399396493 is an apocalyptic number.

It is an amenable number.

253399396493 is a deficient number, since it is larger than the sum of its proper divisors (1).

253399396493 is an equidigital number, since it uses as much as digits as its factorization.

253399396493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127545840, while the sum is 65.

The spelling of 253399396493 in words is "two hundred fifty-three billion, three hundred ninety-nine million, three hundred ninety-six thousand, four hundred ninety-three".