521416482851 has 32 divisors (see below), whose sum is σ = 593725317120. Its totient is φ = 457338124320.

The previous prime is 521416482823. The next prime is 521416482893. The reversal of 521416482851 is 158284614125.

It is not a de Polignac number, because 521416482851 - 2¹⁸ = 521416220707 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521416482796 and 521416482805.

It is not an unprimeable number, because it can be changed into a prime (521416682851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64186076 + ... + 64194198.

It is an arithmetic number, because the mean of its divisors is an integer number (18553916160).

Almost surely, 2^521416482851 is an apocalyptic number.

521416482851 is a deficient number, since it is larger than the sum of its proper divisors (72308834269).

521416482851 is a wasteful number, since it uses less digits than its factorization.

521416482851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848 (or 9826 counting only the distinct ones).

The product of its digits is 614400, while the sum is 47.

The spelling of 521416482851 in words is "five hundred twenty-one billion, four hundred sixteen million, four hundred eighty-two thousand, eight hundred fifty-one".