8178257012 has 12 divisors (see below), whose sum is σ = 14319109056. Its totient is φ = 4087083000.

The previous prime is 8178256987. The next prime is 8178257023. The reversal of 8178257012 is 2107528718.

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 3 ways as a sum of consecutive naturals, for example, 502364 + ... + 518387.

It is an arithmetic number, because the mean of its divisors is an integer number (1193259088).

Almost surely, 2^8178257012 is an apocalyptic number.

It is an amenable number.

8178257012 is a deficient number, since it is larger than the sum of its proper divisors (6140852044).

8178257012 is a wasteful number, since it uses less digits than its factorization.

8178257012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022758 (or 1022756 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 8178257012 is about 90433.7161240209. The cubic root of 8178257012 is about 2014.7457650167.

The spelling of 8178257012 in words is "eight billion, one hundred seventy-eight million, two hundred fifty-seven thousand, twelve".