78043113440146 has 4 divisors (see below), whose sum is σ = 117064670160222. Its totient is φ = 39021556720072.

The previous prime is 78043113440143. The next prime is 78043113440191. The reversal of 78043113440146 is 64104431134087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66242686159521 + 11800427280625 = 8138961^2 + 3435175^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78043113440096 and 78043113440105.

It is not an unprimeable number, because it can be changed into a prime (78043113440143) by changing a digit.

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 as a sum of consecutive naturals, namely, 19510778360035 + ... + 19510778360038.

Almost surely, 2^{78043113440146} is an apocalyptic number.

78043113440146 is a deficient number, since it is larger than the sum of its proper divisors (39021556720076).

78043113440146 is a wasteful number, since it uses less digits than its factorization.

78043113440146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39021556720075.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 78043113440146 in words is "seventy-eight trillion, forty-three billion, one hundred thirteen million, four hundred forty thousand, one hundred forty-six".