247143728887 has 8 divisors (see below), whose sum is σ = 269626733712. Its totient is φ = 224663289600.

The previous prime is 247143728813. The next prime is 247143728933. The reversal of 247143728887 is 788827341742.

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 247143728887 - 2³⁵ = 212783990519 is a prime.

It is a super-2 number, since 2×247143728887² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247143728807) 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, 437128 + ... + 827869.

It is an arithmetic number, because the mean of its divisors is an integer number (33703341714).

Almost surely, 2^247143728887 is an apocalyptic number.

247143728887 is a deficient number, since it is larger than the sum of its proper divisors (22483004825).

247143728887 is a wasteful number, since it uses less digits than its factorization.

247143728887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282769.

The product of its digits is 33718272, while the sum is 61.

The spelling of 247143728887 in words is "two hundred forty-seven billion, one hundred forty-three million, seven hundred twenty-eight thousand, eight hundred eighty-seven".