78484159842 has 32 divisors (see below), whose sum is σ = 173649982464. Its totient is φ = 23448104400.

The previous prime is 78484159829. The next prime is 78484159931. The reversal of 78484159842 is 24895148487.

It is a super-2 number, since 2×78484159842² (a number of 23 digits) contains 22 as substring.

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, 8369638 + ... + 8379009.

It is an arithmetic number, because the mean of its divisors is an integer number (5426561952).

Almost surely, 2^78484159842 is an apocalyptic number.

78484159842 is an abundant number, since it is smaller than the sum of its proper divisors (95165822622).

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

78484159842 is a wasteful number, since it uses less digits than its factorization.

78484159842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16748734.

The product of its digits is 20643840, while the sum is 60.

The spelling of 78484159842 in words is "seventy-eight billion, four hundred eighty-four million, one hundred fifty-nine thousand, eight hundred forty-two".