531540454614 has 64 divisors (see below), whose sum is σ = 1161453715968. Its totient is φ = 161194924800.

The previous prime is 531540454589. The next prime is 531540454663. The reversal of 531540454614 is 416454045135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1538394 + ... + 1851954.

It is an arithmetic number, because the mean of its divisors is an integer number (18147714312).

Almost surely, 2^531540454614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531540454614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580726857984).

531540454614 is an abundant number, since it is smaller than the sum of its proper divisors (629913261354).

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

531540454614 is a wasteful number, since it uses less digits than its factorization.

531540454614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313893.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 531540454614 its reverse (416454045135), we get a palindrome (947994499749).

The spelling of 531540454614 in words is "five hundred thirty-one billion, five hundred forty million, four hundred fifty-four thousand, six hundred fourteen".