78174430614140 has 48 divisors (see below), whose sum is σ = 187625444708352. Its totient is φ = 26801688891456.

The previous prime is 78174430614121. The next prime is 78174430614173. The reversal of 78174430614140 is 4141603447187.

It is a super-2 number, since 2×78174430614140² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6260354 + ... + 13983593.

It is an arithmetic number, because the mean of its divisors is an integer number (3908863431424).

Almost surely, 2^{78174430614140} is an apocalyptic number.

78174430614140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78174430614140 is an abundant number, since it is smaller than the sum of its proper divisors (109451014094212).

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

78174430614140 is a wasteful number, since it uses less digits than its factorization.

78174430614140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20271546 (or 20271544 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 78174430614140 in words is "seventy-eight trillion, one hundred seventy-four billion, four hundred thirty million, six hundred fourteen thousand, one hundred forty".