521642313162 has 24 divisors (see below), whose sum is σ = 1130415549120. Its totient is φ = 173851457640.

The previous prime is 521642313119. The next prime is 521642313169. The reversal of 521642313162 is 261313246125.

521642313162 is a `hidden beast` number, since 5 + 2 + 1 + 642 + 3 + 1 + 3 + 1 + 6 + 2 = 666.

It is a super-3 number, since 3×521642313162³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (521642313169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2332914 + ... + 2546717.

It is an arithmetic number, because the mean of its divisors is an integer number (47100647880).

Almost surely, 2^521642313162 is an apocalyptic number.

521642313162 is an abundant number, since it is smaller than the sum of its proper divisors (608773235958).

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

521642313162 is a wasteful number, since it uses less digits than its factorization.

521642313162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885578 (or 4885575 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 521642313162 its reverse (261313246125), we get a palindrome (782955559287).

The spelling of 521642313162 in words is "five hundred twenty-one billion, six hundred forty-two million, three hundred thirteen thousand, one hundred sixty-two".