7810481381413 has 4 divisors (see below), whose sum is σ = 7811031545740. Its totient is φ = 7809931217088.

The previous prime is 7810481381389. The next prime is 7810481381429. The reversal of 7810481381413 is 3141831840187.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6430474362244 + 1380007019169 = 2535838^2 + 1174737^2 .

It is a cyclic number.

It is not a de Polignac number, because 7810481381413 - 2¹³ = 7810481373221 is a prime.

It is a super-2 number, since 2×7810481381413² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7810481381513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275060868 + ... + 275089261.

It is an arithmetic number, because the mean of its divisors is an integer number (1952757886435).

Almost surely, 2^{7810481381413} is an apocalyptic number.

It is an amenable number.

7810481381413 is a deficient number, since it is larger than the sum of its proper divisors (550164327).

7810481381413 is a wasteful number, since it uses less digits than its factorization.

7810481381413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550164326.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 7810481381413 in words is "seven trillion, eight hundred ten billion, four hundred eighty-one million, three hundred eighty-one thousand, four hundred thirteen".