7840134007849 has 32 divisors (see below), whose sum is σ = 9329889139200. Its totient is φ = 6494105180160.

The previous prime is 7840134007831. The next prime is 7840134007859. The reversal of 7840134007849 is 9487004310487.

It is a happy number.

It is not a de Polignac number, because 7840134007849 - 2¹⁵ = 7840133975081 is a prime.

It is a super-2 number, since 2×7840134007849² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7840134007849.

It is not an unprimeable number, because it can be changed into a prime (7840134007859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42758037 + ... + 42941005.

It is an arithmetic number, because the mean of its divisors is an integer number (291559035600).

Almost surely, 2^{7840134007849} is an apocalyptic number.

7840134007849 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

7840134007849 is a deficient number, since it is larger than the sum of its proper divisors (1489755131351).

7840134007849 is a wasteful number, since it uses less digits than its factorization.

7840134007849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186865.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 7840134007849 in words is "seven trillion, eight hundred forty billion, one hundred thirty-four million, seven thousand, eight hundred forty-nine".