78850886416 has 15 divisors (see below), whose sum is σ = 152775768693. Its totient is φ = 39424881600.

The previous prime is 78850886399. The next prime is 78850886419. The reversal of 78850886416 is 61468805887.

The square root of 78850886416 is 280804.

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., 67597920016 + 11252966400 = 259996^2 + 106080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78850886419) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1088116 + ... + 1158316.

Almost surely, 2^78850886416 is an apocalyptic number.

78850886416 is the 280804-th square number.

It is an amenable number.

78850886416 is a deficient number, since it is larger than the sum of its proper divisors (73924882277).

78850886416 is an frugal number, since it uses more digits than its factorization.

78850886416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140410 (or 70203 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 61.

The spelling of 78850886416 in words is "seventy-eight billion, eight hundred fifty million, eight hundred eighty-six thousand, four hundred sixteen".