51184771287 has 8 divisors (see below), whose sum is σ = 73496081904. Its totient is φ = 31498320768.

The previous prime is 51184771217. The next prime is 51184771303. The reversal of 51184771287 is 78217748115.

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

It is not a de Polignac number, because 51184771287 - 2¹² = 51184767191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51184771217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656214978 + ... + 656215055.

It is an arithmetic number, because the mean of its divisors is an integer number (9187010238).

Almost surely, 2^51184771287 is an apocalyptic number.

51184771287 is a deficient number, since it is larger than the sum of its proper divisors (22311310617).

51184771287 is a wasteful number, since it uses less digits than its factorization.

51184771287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312430049.

The product of its digits is 878080, while the sum is 51.

The spelling of 51184771287 in words is "fifty-one billion, one hundred eighty-four million, seven hundred seventy-one thousand, two hundred eighty-seven".