8156335877889 has 8 divisors (see below), whose sum is σ = 10883105041632. Its totient is φ = 5433561983040.

The previous prime is 8156335877849. The next prime is 8156335877941. The reversal of 8156335877889 is 9887785336518.

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

It is not a de Polignac number, because 8156335877889 - 2¹² = 8156335873793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8156335877839) 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 7 ways as a sum of consecutive naturals, for example, 998812459 + ... + 998820624.

It is an arithmetic number, because the mean of its divisors is an integer number (1360388130204).

Almost surely, 2^{8156335877889} is an apocalyptic number.

It is an amenable number.

8156335877889 is a deficient number, since it is larger than the sum of its proper divisors (2726769163743).

8156335877889 is a wasteful number, since it uses less digits than its factorization.

8156335877889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997634447.

The product of its digits is 2438553600, while the sum is 78.

The spelling of 8156335877889 in words is "eight trillion, one hundred fifty-six billion, three hundred thirty-five million, eight hundred seventy-seven thousand, eight hundred eighty-nine".