8123306782 has 16 divisors (see below), whose sum is σ = 12284255232. Its totient is φ = 4028678680.

The previous prime is 8123306771. The next prime is 8123306803. The reversal of 8123306782 is 2876033218.

It is a super-2 number, since 2×8123306782² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 101913 + ... + 163195.

It is an arithmetic number, because the mean of its divisors is an integer number (767765952).

Almost surely, 2^8123306782 is an apocalyptic number.

8123306782 is a deficient number, since it is larger than the sum of its proper divisors (4160948450).

8123306782 is a wasteful number, since it uses less digits than its factorization.

8123306782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61823.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 8123306782 is about 90129.3891136515. The cubic root of 8123306782 is about 2010.2232190238.

The spelling of 8123306782 in words is "eight billion, one hundred twenty-three million, three hundred six thousand, seven hundred eighty-two".