78798305878 has 8 divisors (see below), whose sum is σ = 118466702640. Its totient is φ = 39309405000.

The previous prime is 78798305843. The next prime is 78798305897. The reversal of 78798305878 is 87850389787.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44872873 + ... + 44874628.

It is an arithmetic number, because the mean of its divisors is an integer number (14808337830).

Almost surely, 2^78798305878 is an apocalyptic number.

78798305878 is a deficient number, since it is larger than the sum of its proper divisors (39668396762).

78798305878 is a wasteful number, since it uses less digits than its factorization.

78798305878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89747942.

The product of its (nonzero) digits is 189665280, while the sum is 70.

The spelling of 78798305878 in words is "seventy-eight billion, seven hundred ninety-eight million, three hundred five thousand, eight hundred seventy-eight".