618878044004080 has 80 divisors (see below), whose sum is σ = 1644865920861120. Its totient is φ = 212132751906816.

The previous prime is 618878044003987. The next prime is 618878044004093. The reversal of 618878044004080 is 80400440878816.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138438519 + ... + 142838998.

It is an arithmetic number, because the mean of its divisors is an integer number (20560824010764).

Almost surely, 2^{618878044004080} is an apocalyptic number.

It is an amenable number.

618878044004080 is an abundant number, since it is smaller than the sum of its proper divisors (1025987876857040).

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

618878044004080 is a wasteful number, since it uses less digits than its factorization.

618878044004080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281281466 (or 281281460 counting only the distinct ones).

The product of its (nonzero) digits is 11010048, while the sum is 58.

The spelling of 618878044004080 in words is "six hundred eighteen trillion, eight hundred seventy-eight billion, forty-four million, four thousand, eighty".