501145133642 has 12 divisors (see below), whose sum is σ = 785822096850. Its totient is φ = 239678106888.

The previous prime is 501145133639. The next prime is 501145133647. The reversal of 501145133642 is 246331541105.

It can be written as a sum of positive squares in only one way, i.e., 338527312561 + 162617821081 = 581831^2 + 403259^2 .

It is a super-2 number, since 2×501145133642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501145133647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236835017 + ... + 236837132.

Almost surely, 2^501145133642 is an apocalyptic number.

501145133642 is a deficient number, since it is larger than the sum of its proper divisors (284676963208).

501145133642 is a wasteful number, since it uses less digits than its factorization.

501145133642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473672197 (or 473672174 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 501145133642 its reverse (246331541105), we get a palindrome (747476674747).

The spelling of 501145133642 in words is "five hundred one billion, one hundred forty-five million, one hundred thirty-three thousand, six hundred forty-two".