6535260772240 has 80 divisors (see below), whose sum is σ = 15610663590192. Its totient is φ = 2542553044992.

The previous prime is 6535260772237. The next prime is 6535260772273. The reversal of 6535260772240 is 422770625356.

It can be written as a sum of positive squares in 8 ways, for example, as 365720143504 + 6169540628736 = 604748^2 + 2483856^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×6535260772240² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8008402 + ... + 8786638.

Almost surely, 2^{6535260772240} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6535260772240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7805331795096).

6535260772240 is an abundant number, since it is smaller than the sum of its proper divisors (9075402817952).

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

6535260772240 is a wasteful number, since it uses less digits than its factorization.

6535260772240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781124 (or 781118 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 49.

The spelling of 6535260772240 in words is "six trillion, five hundred thirty-five billion, two hundred sixty million, seven hundred seventy-two thousand, two hundred forty".