521440751102 has 48 divisors (see below), whose sum is σ = 845247363840. Its totient is φ = 240483876192.

The previous prime is 521440751093. The next prime is 521440751107. The reversal of 521440751102 is 201157044125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521440751107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69309113 + ... + 69316635.

It is an arithmetic number, because the mean of its divisors is an integer number (17609320080).

Almost surely, 2^521440751102 is an apocalyptic number.

521440751102 is a deficient number, since it is larger than the sum of its proper divisors (323806612738).

521440751102 is a wasteful number, since it uses less digits than its factorization.

521440751102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7985 (or 7788 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

Adding to 521440751102 its reverse (201157044125), we get a palindrome (722597795227).

The spelling of 521440751102 in words is "five hundred twenty-one billion, four hundred forty million, seven hundred fifty-one thousand, one hundred two".