503042036993 has 4 divisors (see below), whose sum is σ = 503127260928. Its totient is φ = 502956813060.

The previous prime is 503042036963. The next prime is 503042037007. The reversal of 503042036993 is 399630240305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399630240305 = 5 ⋅79926048061.

It is a cyclic number.

It is not a de Polignac number, because 503042036993 - 2⁸ = 503042036737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503042036923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42603113 + ... + 42614918.

It is an arithmetic number, because the mean of its divisors is an integer number (125781815232).

Almost surely, 2^503042036993 is an apocalyptic number.

It is an amenable number.

503042036993 is a deficient number, since it is larger than the sum of its proper divisors (85223935).

503042036993 is an equidigital number, since it uses as much as digits as its factorization.

503042036993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85223934.

The product of its (nonzero) digits is 524880, while the sum is 44.

The spelling of 503042036993 in words is "five hundred three billion, forty-two million, thirty-six thousand, nine hundred ninety-three".