7831066518381 has 8 divisors (see below), whose sum is σ = 10444501195264. Its totient is φ = 5219171426880.

The previous prime is 7831066518311. The next prime is 7831066518397. The reversal of 7831066518381 is 1838156601387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7831066518381 - 2²⁶ = 7830999409517 is a prime.

It is a super-2 number, since 2×7831066518381² (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 (7831066518311) 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, 384884476 + ... + 384904821.

It is an arithmetic number, because the mean of its divisors is an integer number (1305562649408).

Almost surely, 2^{7831066518381} is an apocalyptic number.

It is an amenable number.

7831066518381 is a deficient number, since it is larger than the sum of its proper divisors (2613434676883).

7831066518381 is a wasteful number, since it uses less digits than its factorization.

7831066518381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769792691.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 7831066518381 in words is "seven trillion, eight hundred thirty-one billion, sixty-six million, five hundred eighteen thousand, three hundred eighty-one".