531505453040 has 40 divisors (see below), whose sum is σ = 1246686041808. Its totient is φ = 210720742400.

The previous prime is 531505453013. The next prime is 531505453069. The reversal of 531505453040 is 40354505135.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×531505453040² (a number of 24 digits) contains 22 as substring.

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, 29388386 + ... + 29406465.

Almost surely, 2^531505453040 is an apocalyptic number.

It is an amenable number.

531505453040 is an abundant number, since it is smaller than the sum of its proper divisors (715180588768).

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

531505453040 is a wasteful number, since it uses less digits than its factorization.

531505453040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58794977 (or 58794971 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 531505453040 its reverse (40354505135), we get a palindrome (571859958175).

The spelling of 531505453040 in words is "five hundred thirty-one billion, five hundred five million, four hundred fifty-three thousand, forty".