78511108723048 has 32 divisors (see below), whose sum is σ = 147332882136960. Its totient is φ = 39222353237760.

The previous prime is 78511108722997. The next prime is 78511108723127. The reversal of 78511108723048 is 84032780111587.

It is a self number, because there is not a number n which added to its sum of digits gives 78511108723048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47336815 + ... + 48967297.

It is an arithmetic number, because the mean of its divisors is an integer number (4604152566780).

Almost surely, 2^{78511108723048} is an apocalyptic number.

It is an amenable number.

78511108723048 is a deficient number, since it is larger than the sum of its proper divisors (68821773413912).

78511108723048 is a wasteful number, since it uses less digits than its factorization.

78511108723048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635577 (or 1635573 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 78511108723048 in words is "seventy-eight trillion, five hundred eleven billion, one hundred eight million, seven hundred twenty-three thousand, forty-eight".