78204518742235 has 16 divisors (see below), whose sum is σ = 95630393767680. Its totient is φ = 61377953496160.

The previous prime is 78204518742223. The next prime is 78204518742263. The reversal of 78204518742235 is 53224781540287.

It is not a de Polignac number, because 78204518742235 - 2²¹ = 78204516645083 is a prime.

It is a super-2 number, since 2×78204518742235² (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 78204518742235.

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, 269814487 + ... + 270104176.

It is an arithmetic number, because the mean of its divisors is an integer number (5976899610480).

Almost surely, 2^{78204518742235} is an apocalyptic number.

78204518742235 is a deficient number, since it is larger than the sum of its proper divisors (17425875025445).

78204518742235 is a wasteful number, since it uses less digits than its factorization.

78204518742235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539919218.

The product of its (nonzero) digits is 30105600, while the sum is 58.

The spelling of 78204518742235 in words is "seventy-eight trillion, two hundred four billion, five hundred eighteen million, seven hundred forty-two thousand, two hundred thirty-five".