531142645602 has 16 divisors (see below), whose sum is σ = 1065329092800. Its totient is φ = 176540248272.

The previous prime is 531142645559. The next prime is 531142645609. The reversal of 531142645602 is 206546241135.

It is a super-2 number, since 2×531142645602² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (531142645609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126822798 + ... + 126826985.

It is an arithmetic number, because the mean of its divisors is an integer number (66583068300).

Almost surely, 2^531142645602 is an apocalyptic number.

531142645602 is an abundant number, since it is smaller than the sum of its proper divisors (534186447198).

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

531142645602 is a wasteful number, since it uses less digits than its factorization.

531142645602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253650137.

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 531142645602 its reverse (206546241135), we get a palindrome (737688886737).

The spelling of 531142645602 in words is "five hundred thirty-one billion, one hundred forty-two million, six hundred forty-five thousand, six hundred two".