260066521404 has 18 divisors (see below), whose sum is σ = 657390373640. Its totient is φ = 86688840456.

The previous prime is 260066521381. The next prime is 260066521453. The reversal of 260066521404 is 404125660062.

260066521404 is a `hidden beast` number, since 2 + 600 + 6 + 6 + 5 + 2 + 1 + 40 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7224070039 = 260066521404 / (2 + 6 + 0 + 0 + 6 + 6 + 5 + 2 + 1 + 4 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3612034984 + ... + 3612035055.

Almost surely, 2^260066521404 is an apocalyptic number.

It is an amenable number.

260066521404 is an abundant number, since it is smaller than the sum of its proper divisors (397323852236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260066521404 is a wasteful number, since it uses less digits than its factorization.

260066521404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224070049 (or 7224070044 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 260066521404 in words is "two hundred sixty billion, sixty-six million, five hundred twenty-one thousand, four hundred four".