78858886458 has 16 divisors (see below), whose sum is σ = 172055752416. Its totient is φ = 23896632240.

The previous prime is 78858886439. The next prime is 78858886489. The reversal of 78858886458 is 85468885887.

It is a self number, because there is not a number n which added to its sum of digits gives 78858886458.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 597415741 + ... + 597415872.

It is an arithmetic number, because the mean of its divisors is an integer number (10753484526).

Almost surely, 2^78858886458 is an apocalyptic number.

78858886458 is an abundant number, since it is smaller than the sum of its proper divisors (93196865958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78858886458 is a wasteful number, since it uses less digits than its factorization.

78858886458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194831629.

The product of its digits is 1101004800, while the sum is 75.

The spelling of 78858886458 in words is "seventy-eight billion, eight hundred fifty-eight million, eight hundred eighty-six thousand, four hundred fifty-eight".