78203656855336 has 16 divisors (see below), whose sum is σ = 146670782027040. Its totient is φ = 39091448314800.

The previous prime is 78203656855237. The next prime is 78203656855381. The reversal of 78203656855336 is 63355865630287.

It is a happy number.

It is a super-2 number, since 2×78203656855336² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297482090 + ... + 1297542361.

It is an arithmetic number, because the mean of its divisors is an integer number (9166923876690).

Almost surely, 2^{78203656855336} is an apocalyptic number.

It is an amenable number.

78203656855336 is a deficient number, since it is larger than the sum of its proper divisors (68467125171704).

78203656855336 is a wasteful number, since it uses less digits than its factorization.

78203656855336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595028224 (or 2595028220 counting only the distinct ones).

The product of its (nonzero) digits is 653184000, while the sum is 67.

The spelling of 78203656855336 in words is "seventy-eight trillion, two hundred three billion, six hundred fifty-six million, eight hundred fifty-five thousand, three hundred thirty-six".