269481580985 has 16 divisors (see below), whose sum is σ = 343618662672. Its totient is φ = 202181683200.

The previous prime is 269481580981. The next prime is 269481580993. The reversal of 269481580985 is 589085184962.

It can be written as a sum of positive squares in 8 ways, for example, as 7882065961 + 261599515024 = 88781^2 + 511468^2 .

It is not a de Polignac number, because 269481580985 - 2² = 269481580981 is a prime.

It is a super-2 number, since 2×269481580985² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (269481580981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5617346 + ... + 5665115.

It is an arithmetic number, because the mean of its divisors is an integer number (21476166417).

Almost surely, 2^269481580985 is an apocalyptic number.

It is an amenable number.

269481580985 is a deficient number, since it is larger than the sum of its proper divisors (74137081687).

269481580985 is a wasteful number, since it uses less digits than its factorization.

269481580985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282764.

The product of its (nonzero) digits is 49766400, while the sum is 65.

The spelling of 269481580985 in words is "two hundred sixty-nine billion, four hundred eighty-one million, five hundred eighty thousand, nine hundred eighty-five".