261430425425459 has 2 divisors, whose sum is σ = 261430425425460. Its totient is φ = 261430425425458.

The previous prime is 261430425425359. The next prime is 261430425425497. The reversal of 261430425425459 is 954524524034162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261430425425459 - 2⁸ = 261430425425203 is a prime.

It is a super-2 number, since 2×261430425425459² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (261430425425359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130715212712729 + 130715212712730.

It is an arithmetic number, because the mean of its divisors is an integer number (130715212712730).

Almost surely, 2^{261430425425459} is an apocalyptic number.

261430425425459 is a deficient number, since it is larger than the sum of its proper divisors (1).

261430425425459 is an equidigital number, since it uses as much as digits as its factorization.

261430425425459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472000, while the sum is 56.

The spelling of 261430425425459 in words is "two hundred sixty-one trillion, four hundred thirty billion, four hundred twenty-five million, four hundred twenty-five thousand, four hundred fifty-nine".