8783481205820 has 24 divisors (see below), whose sum is σ = 18445978865664. Its totient is φ = 3513265180736.

The previous prime is 8783481205819. The next prime is 8783481205883. The reversal of 8783481205820 is 285021843878.

It is a super-2 number, since 2×8783481205820² (a number of 27 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 7389587 + ... + 8495466.

It is an arithmetic number, because the mean of its divisors is an integer number (768582452736).

Almost surely, 2^{8783481205820} is an apocalyptic number.

It is an amenable number.

8783481205820 is an abundant number, since it is smaller than the sum of its proper divisors (9662497659844).

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

8783481205820 is a wasteful number, since it uses less digits than its factorization.

8783481205820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15912709 (or 15912707 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 56.

The spelling of 8783481205820 in words is "eight trillion, seven hundred eighty-three billion, four hundred eighty-one million, two hundred five thousand, eight hundred twenty".