540021424521212 has 24 divisors (see below), whose sum is σ = 946724620732800. Its totient is φ = 269528897943360.

The previous prime is 540021424521197. The next prime is 540021424521217. The reversal of 540021424521212 is 212125424120045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540021424521217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18051212 + ... + 37495187.

It is an arithmetic number, because the mean of its divisors is an integer number (39446859197200).

Almost surely, 2^{540021424521212} is an apocalyptic number.

It is an amenable number.

540021424521212 is a deficient number, since it is larger than the sum of its proper divisors (406703196211588).

540021424521212 is a wasteful number, since it uses less digits than its factorization.

540021424521212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55550741 (or 55550739 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 540021424521212 its reverse (212125424120045), we get a palindrome (752146848641257).

The spelling of 540021424521212 in words is "five hundred forty trillion, twenty-one billion, four hundred twenty-four million, five hundred twenty-one thousand, two hundred twelve".