4978186543980 has 144 divisors (see below), whose sum is σ = 16264532313120. Its totient is φ = 1225214678016.

The previous prime is 4978186543961. The next prime is 4978186544003. The reversal of 4978186543980 is 893456818794.

4978186543980 is a `hidden beast` number, since 4 + 9 + 7 + 8 + 186 + 5 + 439 + 8 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4978186543899 and 4978186543908.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15668136 + ... + 15982704.

Almost surely, 2^{4978186543980} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4978186543980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8132266156560).

4978186543980 is an abundant number, since it is smaller than the sum of its proper divisors (11286345769140).

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

4978186543980 is a wasteful number, since it uses less digits than its factorization.

4978186543980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321360 (or 321355 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 4978186543980 in words is "four trillion, nine hundred seventy-eight billion, one hundred eighty-six million, five hundred forty-three thousand, nine hundred eighty".