78943993130 has 8 divisors (see below), whose sum is σ = 142099187652. Its totient is φ = 31577597248.

The previous prime is 78943993097. The next prime is 78943993189. The reversal of 78943993130 is 3139934987.

It can be written as a sum of positive squares in 2 ways, for example, as 76146746809 + 2797246321 = 275947^2 + 52889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947199647 + ... + 3947199666.

Almost surely, 2^78943993130 is an apocalyptic number.

78943993130 is a deficient number, since it is larger than the sum of its proper divisors (63155194522).

78943993130 is a wasteful number, since it uses less digits than its factorization.

78943993130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7894399320.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 78943993130 in words is "seventy-eight billion, nine hundred forty-three million, nine hundred ninety-three thousand, one hundred thirty".