260106665421 has 8 divisors (see below), whose sum is σ = 349017861664. Its totient is φ = 172299956400.

The previous prime is 260106665387. The next prime is 260106665471. The reversal of 260106665421 is 124566601062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 260106665421 - 2¹⁰ = 260106664397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260106665421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260106665471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276121255 + ... + 276122196.

It is an arithmetic number, because the mean of its divisors is an integer number (43627232708).

Almost surely, 2^260106665421 is an apocalyptic number.

It is an amenable number.

260106665421 is a deficient number, since it is larger than the sum of its proper divisors (88911196243).

260106665421 is a wasteful number, since it uses less digits than its factorization.

260106665421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552243611.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 260106665421 in words is "two hundred sixty billion, one hundred six million, six hundred sixty-five thousand, four hundred twenty-one".