78185533525316 has 48 divisors (see below), whose sum is σ = 156440050945920. Its totient is φ = 33493305323520.

The previous prime is 78185533525313. The next prime is 78185533525327. The reversal of 78185533525316 is 61352533558187.

It is a super-2 number, since 2×78185533525316² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78185533525313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1506642266 + ... + 1506694158.

It is an arithmetic number, because the mean of its divisors is an integer number (3259167728040).

Almost surely, 2^{78185533525316} is an apocalyptic number.

It is an amenable number.

78185533525316 is an abundant number, since it is smaller than the sum of its proper divisors (78254517420604).

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

78185533525316 is a wasteful number, since it uses less digits than its factorization.

78185533525316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74604 (or 74602 counting only the distinct ones).

The product of its digits is 90720000, while the sum is 62.

The spelling of 78185533525316 in words is "seventy-eight trillion, one hundred eighty-five billion, five hundred thirty-three million, five hundred twenty-five thousand, three hundred sixteen".