78218404740368 has 20 divisors (see below), whose sum is σ = 151651183131648. Its totient is φ = 39082615545120.

The previous prime is 78218404740349. The next prime is 78218404740409. The reversal of 78218404740368 is 86304740481287.

It is a super-2 number, since 2×78218404740368² (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 78218404740368.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661652296 + ... + 1661699367.

Almost surely, 2^{78218404740368} is an apocalyptic number.

It is an amenable number.

78218404740368 is a deficient number, since it is larger than the sum of its proper divisors (73432778391280).

78218404740368 is a wasteful number, since it uses less digits than its factorization.

78218404740368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323353142 (or 3323353136 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 62.

The spelling of 78218404740368 in words is "seventy-eight trillion, two hundred eighteen billion, four hundred four million, seven hundred forty thousand, three hundred sixty-eight".