261265537367 has 2 divisors, whose sum is σ = 261265537368. Its totient is φ = 261265537366.

The previous prime is 261265537333. The next prime is 261265537381. The reversal of 261265537367 is 763735562162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261265537367 - 2¹⁴ = 261265520983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261265530367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130632768683 + 130632768684.

It is an arithmetic number, because the mean of its divisors is an integer number (130632768684).

Almost surely, 2^261265537367 is an apocalyptic number.

261265537367 is a deficient number, since it is larger than the sum of its proper divisors (1).

261265537367 is an equidigital number, since it uses as much as digits as its factorization.

261265537367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 53.

The spelling of 261265537367 in words is "two hundred sixty-one billion, two hundred sixty-five million, five hundred thirty-seven thousand, three hundred sixty-seven".