51201518707267 has 4 divisors (see below), whose sum is σ = 51776816670360. Its totient is φ = 50626220744176.

The previous prime is 51201518707249. The next prime is 51201518707277. The reversal of 51201518707267 is 76270781510215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51201518707267 - 2¹¹ = 51201518705219 is a prime.

It is a super-2 number, since 2×51201518707267² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51201518707277) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 287648981413 + ... + 287648981590.

It is an arithmetic number, because the mean of its divisors is an integer number (12944204167590).

Almost surely, 2^{51201518707267} is an apocalyptic number.

51201518707267 is a deficient number, since it is larger than the sum of its proper divisors (575297963093).

51201518707267 is an equidigital number, since it uses as much as digits as its factorization.

51201518707267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575297963092.

The product of its (nonzero) digits is 1646400, while the sum is 52.

The spelling of 51201518707267 in words is "fifty-one trillion, two hundred one billion, five hundred eighteen million, seven hundred seven thousand, two hundred sixty-seven".