253351433693 has 2 divisors, whose sum is σ = 253351433694. Its totient is φ = 253351433692.

The previous prime is 253351433689. The next prime is 253351433707. The reversal of 253351433693 is 396334153352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184716865369 + 68634568324 = 429787^2 + 261982^2 .

It is a cyclic number.

It is not a de Polignac number, because 253351433693 - 2² = 253351433689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253351433633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126675716846 + 126675716847.

It is an arithmetic number, because the mean of its divisors is an integer number (126675716847).

Almost surely, 2^253351433693 is an apocalyptic number.

It is an amenable number.

253351433693 is a deficient number, since it is larger than the sum of its proper divisors (1).

253351433693 is an equidigital number, since it uses as much as digits as its factorization.

253351433693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 47.

The spelling of 253351433693 in words is "two hundred fifty-three billion, three hundred fifty-one million, four hundred thirty-three thousand, six hundred ninety-three".