531045414540 has 72 divisors (see below), whose sum is σ = 1695618702960. Its totient is φ = 134158840704.

The previous prime is 531045414517. The next prime is 531045414569. The reversal of 531045414540 is 45414540135.

531045414540 is a `hidden beast` number, since 5 + 3 + 104 + 5 + 4 + 1 + 4 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 531045414495 and 531045414504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77634799 + ... + 77641638.

Almost surely, 2^531045414540 is an apocalyptic number.

It is an amenable number.

531045414540 is an abundant number, since it is smaller than the sum of its proper divisors (1164573288420).

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

531045414540 is a wasteful number, since it uses less digits than its factorization.

531045414540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155276471 (or 155276466 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 531045414540 its reverse (45414540135), we get a palindrome (576459954675).

The spelling of 531045414540 in words is "five hundred thirty-one billion, forty-five million, four hundred fourteen thousand, five hundred forty".