260618721023 has 4 divisors (see below), whose sum is σ = 261451369008. Its totient is φ = 259786073040.

The previous prime is 260618720993. The next prime is 260618721031. The reversal of 260618721023 is 320127816062.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260618721023 - 2¹⁸ = 260618458879 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 (260618721073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416323523 + ... + 416324148.

It is an arithmetic number, because the mean of its divisors is an integer number (65362842252).

Almost surely, 2^260618721023 is an apocalyptic number.

260618721023 is a deficient number, since it is larger than the sum of its proper divisors (832647985).

260618721023 is an equidigital number, since it uses as much as digits as its factorization.

260618721023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832647984.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 260618721023 in words is "two hundred sixty billion, six hundred eighteen million, seven hundred twenty-one thousand, twenty-three".