8442781048503 has 64 divisors (see below), whose sum is σ = 12866238985600. Its totient is φ = 5470072611840.

The previous prime is 8442781048439. The next prime is 8442781048511. The reversal of 8442781048503 is 3058401872448.

8442781048503 is a `hidden beast` number, since 8 + 4 + 4 + 27 + 8 + 104 + 8 + 503 = 666.

It is not a de Polignac number, because 8442781048503 - 2⁶ = 8442781048439 is a prime.

It is a super-2 number, since 2×8442781048503² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8442781048503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442781048543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38777301 + ... + 38994417.

It is an arithmetic number, because the mean of its divisors is an integer number (201034984150).

Almost surely, 2^{8442781048503} is an apocalyptic number.

8442781048503 is a deficient number, since it is larger than the sum of its proper divisors (4423457937097).

8442781048503 is a wasteful number, since it uses less digits than its factorization.

8442781048503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217489 (or 217483 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 54.

The spelling of 8442781048503 in words is "eight trillion, four hundred forty-two billion, seven hundred eighty-one million, forty-eight thousand, five hundred three".