78881651046208 has 28 divisors (see below), whose sum is σ = 157341816611140. Its totient is φ = 39236468908032.

The previous prime is 78881651046173. The next prime is 78881651046229. The reversal of 78881651046208 is 80264015618887.

It can be written as a sum of positive squares in 2 ways, for example, as 43705744105024 + 35175906941184 = 6611032^2 + 5930928^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 78881651046208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3193059663 + ... + 3193084366.

It is an arithmetic number, because the mean of its divisors is an integer number (5619350593255).

Almost surely, 2^{78881651046208} is an apocalyptic number.

It is an amenable number.

78881651046208 is a deficient number, since it is larger than the sum of its proper divisors (78460165564932).

78881651046208 is a wasteful number, since it uses less digits than its factorization.

78881651046208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386144234 (or 6386144224 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 64.

The spelling of 78881651046208 in words is "seventy-eight trillion, eight hundred eighty-one billion, six hundred fifty-one million, forty-six thousand, two hundred eight".