8231990932856 has 8 divisors (see below), whose sum is σ = 15434982999120. Its totient is φ = 4115995466424.

The previous prime is 8231990932849. The next prime is 8231990932871. The reversal of 8231990932856 is 6582390991328.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 8231990932792 and 8231990932801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514499433296 + ... + 514499433311.

It is an arithmetic number, because the mean of its divisors is an integer number (1929372874890).

Almost surely, 2^{8231990932856} is an apocalyptic number.

It is an amenable number.

8231990932856 is a deficient number, since it is larger than the sum of its proper divisors (7202992066264).

8231990932856 is a wasteful number, since it uses less digits than its factorization.

8231990932856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028998866613 (or 1028998866609 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 65.

The spelling of 8231990932856 in words is "eight trillion, two hundred thirty-one billion, nine hundred ninety million, nine hundred thirty-two thousand, eight hundred fifty-six".