78180548275434 has 128 divisors (see below), whose sum is σ = 172074551261184. Its totient is φ = 23483640960000.

The previous prime is 78180548275421. The next prime is 78180548275469. The reversal of 78180548275434 is 43457284508187.

It is a super-2 number, since 2×78180548275434² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10001345494 + ... + 10001353310.

It is an arithmetic number, because the mean of its divisors is an integer number (1344332431728).

Almost surely, 2^{78180548275434} is an apocalyptic number.

78180548275434 is an abundant number, since it is smaller than the sum of its proper divisors (93894002985750).

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

78180548275434 is a wasteful number, since it uses less digits than its factorization.

78180548275434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 240844800, while the sum is 66.

The spelling of 78180548275434 in words is "seventy-eight trillion, one hundred eighty billion, five hundred forty-eight million, two hundred seventy-five thousand, four hundred thirty-four".