260258780664 has 48 divisors (see below), whose sum is σ = 705106802400. Its totient is φ = 86723478144.

The previous prime is 260258780653. The next prime is 260258780693. The reversal of 260258780664 is 466087852062.

260258780664 is a `hidden beast` number, since 260 + 258 + 78 + 0 + 6 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 260258780664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399424 + ... + 824655.

It is an arithmetic number, because the mean of its divisors is an integer number (14689725050).

Almost surely, 2^260258780664 is an apocalyptic number.

260258780664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

260258780664 is an abundant number, since it is smaller than the sum of its proper divisors (444848021736).

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

260258780664 is a wasteful number, since it uses less digits than its factorization.

260258780664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227044 (or 1227037 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 260258780664 in words is "two hundred sixty billion, two hundred fifty-eight million, seven hundred eighty thousand, six hundred sixty-four".