261524137351 has 2 divisors, whose sum is σ = 261524137352. Its totient is φ = 261524137350.

The previous prime is 261524137349. The next prime is 261524137439. The reversal of 261524137351 is 153731425162.

261524137351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261524137351 - 2¹ = 261524137349 is a prime.

Together with 261524137349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261524137331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130762068675 + 130762068676.

It is an arithmetic number, because the mean of its divisors is an integer number (130762068676).

Almost surely, 2^261524137351 is an apocalyptic number.

261524137351 is a deficient number, since it is larger than the sum of its proper divisors (1).

261524137351 is an equidigital number, since it uses as much as digits as its factorization.

261524137351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The spelling of 261524137351 in words is "two hundred sixty-one billion, five hundred twenty-four million, one hundred thirty-seven thousand, three hundred fifty-one".