78873120150916 has 135 divisors (see below), whose sum is σ = 174387241790853. Its totient is φ = 31198076975520.

The previous prime is 78873120150899. The next prime is 78873120150943. The reversal of 78873120150916 is 61905102137887.

The square root of 78873120150916 is 8881054.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 11667621324100 + 67205498826816 = 3415790^2 + 8197896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 11314459311 + ... + 11314466281.

Almost surely, 2^{78873120150916} is an apocalyptic number.

78873120150916 is the 8881054-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78873120150916

78873120150916 is an abundant number, since it is smaller than the sum of its proper divisors (95514121639937).

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

78873120150916 is an frugal number, since it uses more digits than its factorization.

78873120150916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000 (or 6993 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 78873120150916 in words is "seventy-eight trillion, eight hundred seventy-three billion, one hundred twenty million, one hundred fifty thousand, nine hundred sixteen".