18779972579676 has 432 divisors, whose sum is σ = 62285544518400. Its totient is φ = 4875522442560.

The previous prime is 18779972579657. The next prime is 18779972579729. The reversal of 18779972579676 is 67697527997781.

18779972579676 is a `hidden beast` number, since 187 + 7 + 9 + 97 + 257 + 96 + 7 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1574570425 + ... + 1574582351.

It is an arithmetic number, because the mean of its divisors is an integer number (144179501200).

Almost surely, 2^{18779972579676} 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 18779972579676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31142772259200).

18779972579676 is an abundant number, since it is smaller than the sum of its proper divisors (43505571938724).

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

18779972579676 is a wasteful number, since it uses less digits than its factorization.

18779972579676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14435 (or 14409 counting only the distinct ones).

The product of its digits is 35286632640, while the sum is 90.

The spelling of 18779972579676 in words is "eighteen trillion, seven hundred seventy-nine billion, nine hundred seventy-two million, five hundred seventy-nine thousand, six hundred seventy-six".