78934184450 has 24 divisors (see below), whose sum is σ = 160164637200. Its totient is φ = 28703339600.

The previous prime is 78934184387. The next prime is 78934184507. The reversal of 78934184450 is 5448143987.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78934184392 and 78934184401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71757800 + ... + 71758899.

It is an arithmetic number, because the mean of its divisors is an integer number (6673526550).

Almost surely, 2^78934184450 is an apocalyptic number.

78934184450 is an abundant number, since it is smaller than the sum of its proper divisors (81230452750).

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

78934184450 is a wasteful number, since it uses less digits than its factorization.

78934184450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143516722 (or 143516717 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 78934184450 in words is "seventy-eight billion, nine hundred thirty-four million, one hundred eighty-four thousand, four hundred fifty".