78146140182144 has 32 divisors (see below), whose sum is σ = 207575684859840. Its totient is φ = 26048713393920.

The previous prime is 78146140182133. The next prime is 78146140182167. The reversal of 78146140182144 is 44128104164187.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×78146140182144² (a number of 29 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 101752786312 + ... + 101752787079.

It is an arithmetic number, because the mean of its divisors is an integer number (6486740151870).

Almost surely, 2^{78146140182144} is an apocalyptic number.

It is an amenable number.

78146140182144 is an abundant number, since it is smaller than the sum of its proper divisors (129429544677696).

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

78146140182144 is a wasteful number, since it uses less digits than its factorization.

78146140182144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203505573408 (or 203505573396 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 51.

The spelling of 78146140182144 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred forty million, one hundred eighty-two thousand, one hundred forty-four".