78650793642 has 8 divisors (see below), whose sum is σ = 157301587296. Its totient is φ = 26216931212.

The previous prime is 78650793631. The next prime is 78650793643. The reversal of 78650793642 is 24639705687.

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

78650793642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (78650793643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554232798 + ... + 6554232809.

It is an arithmetic number, because the mean of its divisors is an integer number (19662698412).

Almost surely, 2^78650793642 is an apocalyptic number.

78650793642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78650793642 is a wasteful number, since it uses less digits than its factorization.

78650793642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108465612.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 78650793642 in words is "seventy-eight billion, six hundred fifty million, seven hundred ninety-three thousand, six hundred forty-two".