260358587981 has 2 divisors, whose sum is σ = 260358587982. Its totient is φ = 260358587980.

The previous prime is 260358587971. The next prime is 260358588011. The reversal of 260358587981 is 189785853062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148340522500 + 112018065481 = 385150^2 + 334691^2 .

It is a cyclic number.

It is not a de Polignac number, because 260358587981 - 2¹⁴ = 260358571597 is a prime.

It is a super-2 number, since 2×260358587981² (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 (260358587971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130179293990 + 130179293991.

It is an arithmetic number, because the mean of its divisors is an integer number (130179293991).

Almost surely, 2^260358587981 is an apocalyptic number.

It is an amenable number.

260358587981 is a deficient number, since it is larger than the sum of its proper divisors (1).

260358587981 is an equidigital number, since it uses as much as digits as its factorization.

260358587981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 260358587981 in words is "two hundred sixty billion, three hundred fifty-eight million, five hundred eighty-seven thousand, nine hundred eighty-one".