516212125551 has 32 divisors (see below), whose sum is σ = 767520000000. Its totient is φ = 342900683424.

The previous prime is 516212125549. The next prime is 516212125621. The reversal of 516212125551 is 155521212615.

516212125551 is a `hidden beast` number, since 5 + 1 + 62 + 1 + 21 + 25 + 551 = 666.

It is not a de Polignac number, because 516212125551 - 2¹ = 516212125549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516212125531) 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 31 ways as a sum of consecutive naturals, for example, 10299450 + ... + 10349448.

It is an arithmetic number, because the mean of its divisors is an integer number (23985000000).

Almost surely, 2^516212125551 is an apocalyptic number.

516212125551 is a deficient number, since it is larger than the sum of its proper divisors (251307874449).

516212125551 is a wasteful number, since it uses less digits than its factorization.

516212125551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51380 (or 51374 counting only the distinct ones).

The product of its digits is 30000, while the sum is 36.

The spelling of 516212125551 in words is "five hundred sixteen billion, two hundred twelve million, one hundred twenty-five thousand, five hundred fifty-one".