78959118454 has 4 divisors (see below), whose sum is σ = 118438677684. Its totient is φ = 39479559226.

The previous prime is 78959118443. The next prime is 78959118461. The reversal of 78959118454 is 45481195987.

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

It is a junction number, because it is equal to n+sod(n) for n = 78959118392 and 78959118401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19739779612 + ... + 19739779615.

It is an arithmetic number, because the mean of its divisors is an integer number (29609669421).

Almost surely, 2^78959118454 is an apocalyptic number.

78959118454 is a deficient number, since it is larger than the sum of its proper divisors (39479559230).

78959118454 is a wasteful number, since it uses less digits than its factorization.

78959118454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39479559229.

The product of its digits is 14515200, while the sum is 61.

The spelling of 78959118454 in words is "seventy-eight billion, nine hundred fifty-nine million, one hundred eighteen thousand, four hundred fifty-four".