48642320778 has 16 divisors (see below), whose sum is σ = 97394827296. Its totient is φ = 16195742640.

The previous prime is 48642320737. The next prime is 48642320801. The reversal of 48642320778 is 87702324684.

It is a self number, because there is not a number n which added to its sum of digits gives 48642320778.

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, 4585333 + ... + 4595928.

It is an arithmetic number, because the mean of its divisors is an integer number (6087176706).

Almost surely, 2^48642320778 is an apocalyptic number.

48642320778 is an abundant number, since it is smaller than the sum of its proper divisors (48752506518).

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

48642320778 is a wasteful number, since it uses less digits than its factorization.

48642320778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182149.

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 48642320778 in words is "forty-eight billion, six hundred forty-two million, three hundred twenty thousand, seven hundred seventy-eight".