51206001205 has 8 divisors (see below), whose sum is σ = 64681264800. Its totient is φ = 38808758736.

The previous prime is 51206001199. The next prime is 51206001233. The reversal of 51206001205 is 50210060215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51206001205 - 2²¹ = 51203904053 is a prime.

It is a super-2 number, since 2×51206001205² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269505175 + ... + 269505364.

It is an arithmetic number, because the mean of its divisors is an integer number (8085158100).

Almost surely, 2^51206001205 is an apocalyptic number.

It is an amenable number.

51206001205 is a deficient number, since it is larger than the sum of its proper divisors (13475263595).

51206001205 is a wasteful number, since it uses less digits than its factorization.

51206001205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539010563.

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 51206001205 in words is "fifty-one billion, two hundred six million, one thousand, two hundred five".