260012661665 has 32 divisors (see below), whose sum is σ = 327018332160. Its totient is φ = 198216216000.

The previous prime is 260012661631. The next prime is 260012661691. The reversal of 260012661665 is 566166210062.

It is not a de Polignac number, because 260012661665 - 2⁸ = 260012661409 is a prime.

It is a super-2 number, since 2×260012661665² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48588740 + ... + 48594090.

It is an arithmetic number, because the mean of its divisors is an integer number (10219322880).

Almost surely, 2^260012661665 is an apocalyptic number.

It is an amenable number.

260012661665 is a deficient number, since it is larger than the sum of its proper divisors (67005670495).

260012661665 is a wasteful number, since it uses less digits than its factorization.

260012661665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 260012661665 in words is "two hundred sixty billion, twelve million, six hundred sixty-one thousand, six hundred sixty-five".