78530944408 has 64 divisors (see below), whose sum is σ = 172444104000. Its totient is φ = 32823982080.

The previous prime is 78530944363. The next prime is 78530944421. The reversal of 78530944408 is 80444903587.

It is a super-2 number, since 2×78530944408² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12507766 + ... + 12514042.

It is an arithmetic number, because the mean of its divisors is an integer number (2694439125).

Almost surely, 2^78530944408 is an apocalyptic number.

It is an amenable number.

78530944408 is an abundant number, since it is smaller than the sum of its proper divisors (93913159592).

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

78530944408 is a wasteful number, since it uses less digits than its factorization.

78530944408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780 (or 11776 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 78530944408 in words is "seventy-eight billion, five hundred thirty million, nine hundred forty-four thousand, four hundred eight".