51660850002201 has 96 divisors (see below), whose sum is σ = 87788954897280. Its totient is φ = 28935136742400.

The previous prime is 51660850002169. The next prime is 51660850002269. The reversal of 51660850002201 is 10220005806615.

51660850002201 is a `hidden beast` number, since 516 + 60 + 85 + 0 + 0 + 0 + 2 + 2 + 0 + 1 = 666.

It is not a de Polignac number, because 51660850002201 - 2⁵ = 51660850002169 is a prime.

It is a super-2 number, since 2×51660850002201² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51660850003201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 835729371 + ... + 835791183.

It is an arithmetic number, because the mean of its divisors is an integer number (914468280180).

Almost surely, 2^{51660850002201} is an apocalyptic number.

It is an amenable number.

51660850002201 is a deficient number, since it is larger than the sum of its proper divisors (36128104895079).

51660850002201 is a wasteful number, since it uses less digits than its factorization.

51660850002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72727 (or 72724 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

Adding to 51660850002201 its reverse (10220005806615), we get a palindrome (61880855808816).

The spelling of 51660850002201 in words is "fifty-one trillion, six hundred sixty billion, eight hundred fifty million, two thousand, two hundred one".