10256260322640 has 40 divisors (see below), whose sum is σ = 31794407000928. Its totient is φ = 2735002752640.

The previous prime is 10256260322593. The next prime is 10256260322641. The reversal of 10256260322640 is 4622306265201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10256260322641) 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, 21367208766 + ... + 21367209245.

Almost surely, 2^{10256260322640} is an apocalyptic number.

10256260322640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10256260322640 is an abundant number, since it is smaller than the sum of its proper divisors (21538146678288).

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

10256260322640 is a wasteful number, since it uses less digits than its factorization.

10256260322640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42734418027 (or 42734418021 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 10256260322640 its reverse (4622306265201), we get a palindrome (14878566587841).

The spelling of 10256260322640 in words is "ten trillion, two hundred fifty-six billion, two hundred sixty million, three hundred twenty-two thousand, six hundred forty".