799345656138 has 32 divisors (see below), whose sum is σ = 1695586628736. Its totient is φ = 250352196608.

The previous prime is 799345656119. The next prime is 799345656167. The reversal of 799345656138 is 831656543997.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 6547206 + ... + 6668177.

It is an arithmetic number, because the mean of its divisors is an integer number (52987082148).

Almost surely, 2^799345656138 is an apocalyptic number.

799345656138 is an abundant number, since it is smaller than the sum of its proper divisors (896240972598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

799345656138 is a wasteful number, since it uses less digits than its factorization.

799345656138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13215998.

The product of its digits is 146966400, while the sum is 66.

The spelling of 799345656138 in words is "seven hundred ninety-nine billion, three hundred forty-five million, six hundred fifty-six thousand, one hundred thirty-eight".