503040430040 has 32 divisors (see below), whose sum is σ = 1148734122480. Its totient is φ = 198212944512.

The previous prime is 503040429911. The next prime is 503040430133. The reversal of 503040430040 is 40034040305.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 503040429988 and 503040430015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93848147 + ... + 93853506.

Almost surely, 2^503040430040 is an apocalyptic number.

It is an amenable number.

503040430040 is an abundant number, since it is smaller than the sum of its proper divisors (645693692440).

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

503040430040 is a wasteful number, since it uses less digits than its factorization.

503040430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187701731 (or 187701727 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 503040430040 its reverse (40034040305), we get a palindrome (543074470345).

The spelling of 503040430040 in words is "five hundred three billion, forty million, four hundred thirty thousand, forty".