78146140017684 has 24 divisors (see below), whose sum is σ = 184909176381888. Its totient is φ = 25681830052480.

The previous prime is 78146140017601. The next prime is 78146140017707. The reversal of 78146140017684 is 48671004164187.

It is a super-2 number, since 2×78146140017684² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 45860409957 + ... + 45860411660.

It is an arithmetic number, because the mean of its divisors is an integer number (7704549015912).

Almost surely, 2^{78146140017684} is an apocalyptic number.

It is an amenable number.

78146140017684 is an abundant number, since it is smaller than the sum of its proper divisors (106763036364204).

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

78146140017684 is a wasteful number, since it uses less digits than its factorization.

78146140017684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91720821695 (or 91720821693 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 78146140017684 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred forty million, seventeen thousand, six hundred eighty-four".