78146140182252 has 12 divisors (see below), whose sum is σ = 182340993758616. Its totient is φ = 26048713394080.

The previous prime is 78146140182251. The next prime is 78146140182311. The reversal of 78146140182252 is 25228104164187.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78146140182252² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78146140182195 and 78146140182204.

It is not an unprimeable number, because it can be changed into a prime (78146140182251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3256089174249 + ... + 3256089174272.

It is an arithmetic number, because the mean of its divisors is an integer number (15195082813218).

Almost surely, 2^{78146140182252} is an apocalyptic number.

It is an amenable number.

78146140182252 is an abundant number, since it is smaller than the sum of its proper divisors (104194853576364).

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

78146140182252 is a wasteful number, since it uses less digits than its factorization.

78146140182252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512178348528 (or 6512178348526 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 78146140182252 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred forty million, one hundred eighty-two thousand, two hundred fifty-two".