260436517062640 has 40 divisors (see below), whose sum is σ = 637384107551760. Its totient is φ = 98691732781056.

The previous prime is 260436517062581. The next prime is 260436517062751. The reversal of 260436517062640 is 46260715634062.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85669905409 + ... + 85669908448.

It is an arithmetic number, because the mean of its divisors is an integer number (15934602688794).

Almost surely, 2^{260436517062640} is an apocalyptic number.

260436517062640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260436517062640 is an abundant number, since it is smaller than the sum of its proper divisors (376947590489120).

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

260436517062640 is a wasteful number, since it uses less digits than its factorization.

260436517062640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171339813889 (or 171339813883 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 260436517062640 in words is "two hundred sixty trillion, four hundred thirty-six billion, five hundred seventeen million, sixty-two thousand, six hundred forty".