78163136242 has 8 divisors (see below), whose sum is σ = 117257760000. Its totient is φ = 39077216244.

The previous prime is 78163136147. The next prime is 78163136287. The reversal of 78163136242 is 24263136187.

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

It is a super-2 number, since 2×78163136242² (a number of 23 digits) contains 22 as substring.

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, 2153442 + ... + 2189437.

It is an arithmetic number, because the mean of its divisors is an integer number (14657220000).

Almost surely, 2^78163136242 is an apocalyptic number.

78163136242 is a deficient number, since it is larger than the sum of its proper divisors (39094623758).

78163136242 is a wasteful number, since it uses less digits than its factorization.

78163136242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351880.

The product of its digits is 290304, while the sum is 43.

The spelling of 78163136242 in words is "seventy-eight billion, one hundred sixty-three million, one hundred thirty-six thousand, two hundred forty-two".