260111681 has 2 divisors, whose sum is σ = 260111682. Its totient is φ = 260111680.

The previous prime is 260111641. The next prime is 260111693. The reversal of 260111681 is 186111062.

260111681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212722225 + 47389456 = 14585^2 + 6884^2 .

It is a cyclic number.

It is not a de Polignac number, because 260111681 - 2¹⁸ = 259849537 is a prime.

It is a super-2 number, since 2×260111681² = 135316173185291522, which contains 22 as substring.

It is equal to p_14201639 and since 260111681 and 14201639 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 260111681.

It is not a weakly prime, because it can be changed into another prime (260111641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130055840 + 130055841.

It is an arithmetic number, because the mean of its divisors is an integer number (130055841).

Almost surely, 2^260111681 is an apocalyptic number.

It is an amenable number.

260111681 is a deficient number, since it is larger than the sum of its proper divisors (1).

260111681 is an equidigital number, since it uses as much as digits as its factorization.

260111681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 260111681 is about 16127.9782055904. The cubic root of 260111681 is about 638.3418019920.

The spelling of 260111681 in words is "two hundred sixty million, one hundred eleven thousand, six hundred eighty-one".