8256123072782 has 8 divisors (see below), whose sum is σ = 13336814194536. Its totient is φ = 3810518341272.

The previous prime is 8256123072781. The next prime is 8256123072787. The reversal of 8256123072782 is 2872703216528.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8256123072781) 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, 158771597528 + ... + 158771597579.

It is an arithmetic number, because the mean of its divisors is an integer number (1667101774317).

Almost surely, 2^{8256123072782} is an apocalyptic number.

8256123072782 is a deficient number, since it is larger than the sum of its proper divisors (5080691121754).

8256123072782 is a wasteful number, since it uses less digits than its factorization.

8256123072782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317543195122.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 8256123072782 in words is "eight trillion, two hundred fifty-six billion, one hundred twenty-three million, seventy-two thousand, seven hundred eighty-two".