78835015198 has 4 divisors (see below), whose sum is σ = 118252522800. Its totient is φ = 39417507598.

The previous prime is 78835015169. The next prime is 78835015247. The reversal of 78835015198 is 89151053887.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19708753798 + ... + 19708753801.

It is an arithmetic number, because the mean of its divisors is an integer number (29563130700).

Almost surely, 2^78835015198 is an apocalyptic number.

78835015198 is a deficient number, since it is larger than the sum of its proper divisors (39417507602).

78835015198 is a wasteful number, since it uses less digits than its factorization.

78835015198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39417507601.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 78835015198 in words is "seventy-eight billion, eight hundred thirty-five million, fifteen thousand, one hundred ninety-eight".