78663000194 has 8 divisors (see below), whose sum is σ = 117996393468. Its totient is φ = 39330869040.

The previous prime is 78663000193. The next prime is 78663000211. The reversal of 78663000194 is 49100036687.

It can be written as a sum of positive squares in 2 ways, for example, as 76445061169 + 2217939025 = 276487^2 + 47095^2 .

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

It is not an unprimeable number, because it can be changed into a prime (78663000193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140237 + ... + 420704.

Almost surely, 2^78663000194 is an apocalyptic number.

78663000194 is a deficient number, since it is larger than the sum of its proper divisors (39333393274).

78663000194 is a wasteful number, since it uses less digits than its factorization.

78663000194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631060.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 78663000194 in words is "seventy-eight billion, six hundred sixty-three million, one hundred ninety-four", and thus it is an aban number.