78009318132 has 48 divisors (see below), whose sum is σ = 189958433280. Its totient is φ = 24869563488.

The previous prime is 78009318119. The next prime is 78009318199. The reversal of 78009318132 is 23181390087.

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, 4202223 + ... + 4220745.

It is an arithmetic number, because the mean of its divisors is an integer number (3957467360).

Almost surely, 2^78009318132 is an apocalyptic number.

It is an amenable number.

78009318132 is an abundant number, since it is smaller than the sum of its proper divisors (111949115148).

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

78009318132 is a wasteful number, since it uses less digits than its factorization.

78009318132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33812 (or 33810 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 78009318132 in words is "seventy-eight billion, nine million, three hundred eighteen thousand, one hundred thirty-two".