78213465514185 has 32 divisors (see below), whose sum is σ = 125231351374080. Its totient is φ = 41683923360768.

The previous prime is 78213465514159. The next prime is 78213465514187. The reversal of 78213465514185 is 58141556431287.

It is not a de Polignac number, because 78213465514185 - 2¹¹ = 78213465512137 is a prime.

It is a super-3 number, since 3×78213465514185³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78213465514187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118709332 + ... + 119366378.

It is an arithmetic number, because the mean of its divisors is an integer number (3913479730440).

Almost surely, 2^{78213465514185} is an apocalyptic number.

It is an amenable number.

78213465514185 is a deficient number, since it is larger than the sum of its proper divisors (47017885859895).

78213465514185 is a wasteful number, since it uses less digits than its factorization.

78213465514185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662737.

The product of its digits is 32256000, while the sum is 60.

The spelling of 78213465514185 in words is "seventy-eight trillion, two hundred thirteen billion, four hundred sixty-five million, five hundred fourteen thousand, one hundred eighty-five".