78685732851322 has 8 divisors (see below), whose sum is σ = 124971458058036. Its totient is φ = 37028580165312.

The previous prime is 78685732851311. The next prime is 78685732851347. The reversal of 78685732851322 is 22315823758687.

78685732851322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 70423666718161 + 8262066133161 = 8391881^2 + 2874381^2 .

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

It is a super-2 number, since 2×78685732851322² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157143130133 + ... + 1157143130200.

Almost surely, 2^{78685732851322} is an apocalyptic number.

78685732851322 is a deficient number, since it is larger than the sum of its proper divisors (46285725206714).

78685732851322 is a wasteful number, since it uses less digits than its factorization.

78685732851322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314286260352.

The product of its digits is 270950400, while the sum is 67.

The spelling of 78685732851322 in words is "seventy-eight trillion, six hundred eighty-five billion, seven hundred thirty-two million, eight hundred fifty-one thousand, three hundred twenty-two".