260513644541 has 4 divisors (see below), whose sum is σ = 262019503932. Its totient is φ = 259007785152.

The previous prime is 260513644519. The next prime is 260513644549. The reversal of 260513644541 is 145446315062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145446315062 = 2 ⋅72723157531.

It can be written as a sum of positive squares in 2 ways, for example, as 237920548441 + 22593096100 = 487771^2 + 150310^2 .

It is a cyclic number.

It is not a de Polignac number, because 260513644541 - 2⁶ = 260513644477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260513644549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752929436 + ... + 752929781.

It is an arithmetic number, because the mean of its divisors is an integer number (65504875983).

Almost surely, 2^260513644541 is an apocalyptic number.

It is an amenable number.

260513644541 is a deficient number, since it is larger than the sum of its proper divisors (1505859391).

260513644541 is a wasteful number, since it uses less digits than its factorization.

260513644541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505859390.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 260513644541 in words is "two hundred sixty billion, five hundred thirteen million, six hundred forty-four thousand, five hundred forty-one".