78702993216 has 168 divisors, whose sum is σ = 228016149504. Its totient is φ = 25953177600.

The previous prime is 78702993203. The next prime is 78702993289. The reversal of 78702993216 is 61239920787.

78702993216 is a `hidden beast` number, since 78 + 70 + 299 + 3 + 216 = 666.

It is a super-2 number, since 2×78702993216² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29332611 + ... + 29335293.

Almost surely, 2^78702993216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78702993216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114008074752).

78702993216 is an abundant number, since it is smaller than the sum of its proper divisors (149313156288).

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

78702993216 is a wasteful number, since it uses less digits than its factorization.

78702993216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3216 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 78702993216 in words is "seventy-eight billion, seven hundred two million, nine hundred ninety-three thousand, two hundred sixteen".