8143881823951 has 4 divisors (see below), whose sum is σ = 8333274424552. Its totient is φ = 7954489223352.

The previous prime is 8143881823919. The next prime is 8143881823997. The reversal of 8143881823951 is 1593281883418.

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

It is a cyclic number.

It is not a de Polignac number, because 8143881823951 - 2⁵ = 8143881823919 is a prime.

It is a super-2 number, since 2×8143881823951² (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 8143881823951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143881823351) 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, 94696300236 + ... + 94696300321.

It is an arithmetic number, because the mean of its divisors is an integer number (2083318606138).

Almost surely, 2^{8143881823951} is an apocalyptic number.

8143881823951 is a deficient number, since it is larger than the sum of its proper divisors (189392600601).

8143881823951 is a wasteful number, since it uses less digits than its factorization.

8143881823951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189392600600.

The product of its digits is 13271040, while the sum is 61.

The spelling of 8143881823951 in words is "eight trillion, one hundred forty-three billion, eight hundred eighty-one million, eight hundred twenty-three thousand, nine hundred fifty-one".