78463220111055 has 48 divisors (see below), whose sum is σ = 146541483335520. Its totient is φ = 38607790351104.

The previous prime is 78463220111027. The next prime is 78463220111077. The reversal of 78463220111055 is 55011102236487.

78463220111055 is a `hidden beast` number, since 7 + 8 + 4 + 632 + 2 + 0 + 1 + 1 + 1 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 78463220111055 - 2⁶ = 78463220110991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78463220111055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34050940 + ... + 36282129.

It is an arithmetic number, because the mean of its divisors is an integer number (3052947569490).

Almost surely, 2^{78463220111055} is an apocalyptic number.

78463220111055 is a deficient number, since it is larger than the sum of its proper divisors (68078263224465).

78463220111055 is a wasteful number, since it uses less digits than its factorization.

78463220111055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70335000 (or 70334997 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 78463220111055 in words is "seventy-eight trillion, four hundred sixty-three billion, two hundred twenty million, one hundred eleven thousand, fifty-five".