2130405256240 has 20 divisors (see below), whose sum is σ = 4953192220944. Its totient is φ = 852162102464.

The previous prime is 2130405256237. The next prime is 2130405256337. The reversal of 2130405256240 is 426525040312.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2130405256196 and 2130405256205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13315032772 + ... + 13315032931.

Almost surely, 2^{2130405256240} is an apocalyptic number.

2130405256240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130405256240 is an abundant number, since it is smaller than the sum of its proper divisors (2822786964704).

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

2130405256240 is a wasteful number, since it uses less digits than its factorization.

2130405256240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26630065716 (or 26630065710 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 2130405256240 in words is "two trillion, one hundred thirty billion, four hundred five million, two hundred fifty-six thousand, two hundred forty".