78855847479195 has 16 divisors (see below), whose sum is σ = 130520023414560. Its totient is φ = 40606229506304.

The previous prime is 78855847479173. The next prime is 78855847479247. The reversal of 78855847479195 is 59197474855887.

It is a cyclic number.

It is not a de Polignac number, because 78855847479195 - 2⁶ = 78855847479131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (87).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90638904714 + ... + 90638905583.

It is an arithmetic number, because the mean of its divisors is an integer number (8157501463410).

Almost surely, 2^{78855847479195} is an apocalyptic number.

78855847479195 is a deficient number, since it is larger than the sum of its proper divisors (51664175935365).

78855847479195 is a wasteful number, since it uses less digits than its factorization.

78855847479195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181277810334.

The product of its digits is 28449792000, while the sum is 87.

The spelling of 78855847479195 in words is "seventy-eight trillion, eight hundred fifty-five billion, eight hundred forty-seven million, four hundred seventy-nine thousand, one hundred ninety-five".