78421363204 has 24 divisors (see below), whose sum is σ = 138025270656. Its totient is φ = 38986164000.

The previous prime is 78421363199. The next prime is 78421363243. The reversal of 78421363204 is 40236312487.

It is a happy number.

It is a super-2 number, since 2×78421363204² (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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458574 + ... + 605914.

It is an arithmetic number, because the mean of its divisors is an integer number (5751052944).

Almost surely, 2^78421363204 is an apocalyptic number.

It is an amenable number.

78421363204 is a deficient number, since it is larger than the sum of its proper divisors (59603907452).

78421363204 is a wasteful number, since it uses less digits than its factorization.

78421363204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148107 (or 148105 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 78421363204 in words is "seventy-eight billion, four hundred twenty-one million, three hundred sixty-three thousand, two hundred four".