823570948503 has 12 divisors (see below), whose sum is σ = 1207357742968. Its totient is φ = 540852562800.

The previous prime is 823570948477. The next prime is 823570948513. The reversal of 823570948503 is 305849075328.

823570948503 is a `hidden beast` number, since 8 + 23 + 5 + 70 + 9 + 48 + 503 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-823570948503 is a prime.

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 823570948503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823570948513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 682894048 + ... + 682895253.

Almost surely, 2^823570948503 is an apocalyptic number.

823570948503 is a deficient number, since it is larger than the sum of its proper divisors (383786794465).

823570948503 is a wasteful number, since it uses less digits than its factorization.

823570948503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365789374 (or 1365789371 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 823570948503 in words is "eight hundred twenty-three billion, five hundred seventy million, nine hundred forty-eight thousand, five hundred three".