51016505701487 has 2 divisors, whose sum is σ = 51016505701488. Its totient is φ = 51016505701486.

The previous prime is 51016505701451. The next prime is 51016505701543. The reversal of 51016505701487 is 78410750561015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51016505701487 - 2⁶ = 51016505701423 is a prime.

It is a super-3 number, since 3×51016505701487³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51016505701087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25508252850743 + 25508252850744.

It is an arithmetic number, because the mean of its divisors is an integer number (25508252850744).

Almost surely, 2^{51016505701487} is an apocalyptic number.

51016505701487 is a deficient number, since it is larger than the sum of its proper divisors (1).

51016505701487 is an equidigital number, since it uses as much as digits as its factorization.

51016505701487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176000, while the sum is 50.

The spelling of 51016505701487 in words is "fifty-one trillion, sixteen billion, five hundred five million, seven hundred one thousand, four hundred eighty-seven".