505051205440 has 56 divisors (see below), whose sum is σ = 1207685387520. Its totient is φ = 201175177728.

The previous prime is 505051205411. The next prime is 505051205473. The reversal of 505051205440 is 44502150505.

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, 3225372 + ... + 3378331.

Almost surely, 2^505051205440 is an apocalyptic number.

It is an amenable number.

505051205440 is an abundant number, since it is smaller than the sum of its proper divisors (702634182080).

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

505051205440 is a wasteful number, since it uses less digits than its factorization.

505051205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6603959 (or 6603949 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 505051205440 its reverse (44502150505), we get a palindrome (549553355945).

The spelling of 505051205440 in words is "five hundred five billion, fifty-one million, two hundred five thousand, four hundred forty".