78218357144147 has 8 divisors (see below), whose sum is σ = 85653562199040. Its totient is φ = 70837226308360.

The previous prime is 78218357144107. The next prime is 78218357144171. The reversal of 78218357144147 is 74144175381287.

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

It is a cyclic number.

It is not a de Polignac number, because 78218357144147 - 2¹² = 78218357140051 is a prime.

It is a super-2 number, since 2×78218357144147² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78218357144147.

It is not an unprimeable number, because it can be changed into a prime (78218357144107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13518551747 + ... + 13518557532.

It is an arithmetic number, because the mean of its divisors is an integer number (10706695274880).

Almost surely, 2^{78218357144147} is an apocalyptic number.

78218357144147 is a deficient number, since it is larger than the sum of its proper divisors (7435205054893).

78218357144147 is a wasteful number, since it uses less digits than its factorization.

78218357144147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27037109553.

The product of its digits is 42147840, while the sum is 62.

The spelling of 78218357144147 in words is "seventy-eight trillion, two hundred eighteen billion, three hundred fifty-seven million, one hundred forty-four thousand, one hundred forty-seven".