78682494016 has 63 divisors (see below), whose sum is σ = 181663363749. Its totient is φ = 33714336768.

The previous prime is 78682494001. The next prime is 78682494067. The reversal of 78682494016 is 61049428687.

It is a happy number.

The square root of 78682494016 is 280504.

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., 37131748416 + 41550745600 = 192696^2 + 203840^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15705720 + ... + 15710728.

Almost surely, 2^78682494016 is an apocalyptic number.

78682494016 is the 280504-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78682494016

78682494016 is an abundant number, since it is smaller than the sum of its proper divisors (102980869733).

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

78682494016 is an frugal number, since it uses more digits than its factorization.

78682494016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044 (or 5018 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 78682494016 in words is "seventy-eight billion, six hundred eighty-two million, four hundred ninety-four thousand, sixteen".