78929450558 has 8 divisors (see below), whose sum is σ = 135307629552. Its totient is φ = 33826907376.

The previous prime is 78929450557. The next prime is 78929450573. The reversal of 78929450558 is 85505492987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×78929450558³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78929450558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78929450557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2818908935 + ... + 2818908962.

It is an arithmetic number, because the mean of its divisors is an integer number (16913453694).

Almost surely, 2^78929450558 is an apocalyptic number.

78929450558 is a deficient number, since it is larger than the sum of its proper divisors (56378178994).

78929450558 is a wasteful number, since it uses less digits than its factorization.

78929450558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637817906.

The product of its (nonzero) digits is 36288000, while the sum is 62.

The spelling of 78929450558 in words is "seventy-eight billion, nine hundred twenty-nine million, four hundred fifty thousand, five hundred fifty-eight".