78434013454 has 16 divisors (see below), whose sum is σ = 122772914208. Its totient is φ = 37509892992.

The previous prime is 78434013433. The next prime is 78434013457. The reversal of 78434013454 is 45431043487.

It is a self number, because there is not a number n which added to its sum of digits gives 78434013454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78434013457) by changing a digit.

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, 1146994 + ... + 1213450.

It is an arithmetic number, because the mean of its divisors is an integer number (7673307138).

Almost surely, 2^78434013454 is an apocalyptic number.

78434013454 is a deficient number, since it is larger than the sum of its proper divisors (44338900754).

78434013454 is a wasteful number, since it uses less digits than its factorization.

78434013454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92139.

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 78434013454 in words is "seventy-eight billion, four hundred thirty-four million, thirteen thousand, four hundred fifty-four".