4758891393978 has 16 divisors (see below), whose sum is σ = 10575314208960. Its totient is φ = 1586297131308.

The previous prime is 4758891393967. The next prime is 4758891394009. The reversal of 4758891393978 is 8793931988574.

4758891393978 is a `hidden beast` number, since 4 + 7 + 58 + 8 + 91 + 393 + 97 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4758891393897 and 4758891393906.

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, 44063809150 + ... + 44063809257.

It is an arithmetic number, because the mean of its divisors is an integer number (660957138060).

Almost surely, 2^{4758891393978} is an apocalyptic number.

4758891393978 is an abundant number, since it is smaller than the sum of its proper divisors (5816422814982).

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

4758891393978 is a wasteful number, since it uses less digits than its factorization.

4758891393978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88127618418 (or 88127618412 counting only the distinct ones).

The product of its digits is 3292047360, while the sum is 81.

The spelling of 4758891393978 in words is "four trillion, seven hundred fifty-eight billion, eight hundred ninety-one million, three hundred ninety-three thousand, nine hundred seventy-eight".