503042036991 has 32 divisors (see below), whose sum is σ = 730832114880. Its totient is φ = 305918705664.

The previous prime is 503042036963. The next prime is 503042037007. The reversal of 503042036991 is 199630240305.

It is a happy number.

It is not a de Polignac number, because 503042036991 - 2³³ = 494452102399 is a prime.

It is a super-2 number, since 2×503042036991² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503042036191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6462495 + ... + 6539871.

It is an arithmetic number, because the mean of its divisors is an integer number (22838503590).

Almost surely, 2^503042036991 is an apocalyptic number.

503042036991 is a deficient number, since it is larger than the sum of its proper divisors (227790077889).

503042036991 is a wasteful number, since it uses less digits than its factorization.

503042036991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79355.

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 503042036991 in words is "five hundred three billion, forty-two million, thirty-six thousand, nine hundred ninety-one".