8623780049556 has 288 divisors, whose sum is σ = 25565307156480. Its totient is φ = 2400396768000.

The previous prime is 8623780049527. The next prime is 8623780049581. The reversal of 8623780049556 is 6559400873268.

It is a happy number.

8623780049556 is a `hidden beast` number, since 8 + 6 + 2 + 3 + 78 + 0 + 0 + 4 + 9 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 8623780049493 and 8623780049502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 583824451 + ... + 583839221.

Almost surely, 2^{8623780049556} 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 8623780049556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12782653578240).

8623780049556 is an abundant number, since it is smaller than the sum of its proper divisors (16941527106924).

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

8623780049556 is a wasteful number, since it uses less digits than its factorization.

8623780049556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235 (or 15230 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 8623780049556 in words is "eight trillion, six hundred twenty-three billion, seven hundred eighty million, forty-nine thousand, five hundred fifty-six".