268742555429 has 2 divisors, whose sum is σ = 268742555430. Its totient is φ = 268742555428.

The previous prime is 268742555383. The next prime is 268742555447. The reversal of 268742555429 is 924555247862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189965222500 + 78777332929 = 435850^2 + 280673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268742555429 is a prime.

It is a super-2 number, since 2×268742555429² (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 (268742555629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134371277714 + 134371277715.

It is an arithmetic number, because the mean of its divisors is an integer number (134371277715).

Almost surely, 2^268742555429 is an apocalyptic number.

It is an amenable number.

268742555429 is a deficient number, since it is larger than the sum of its proper divisors (1).

268742555429 is an equidigital number, since it uses as much as digits as its factorization.

268742555429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384000, while the sum is 59.

The spelling of 268742555429 in words is "two hundred sixty-eight billion, seven hundred forty-two million, five hundred fifty-five thousand, four hundred twenty-nine".