247390244897 has 16 divisors (see below), whose sum is σ = 251930891520. Its totient is φ = 242894775552.

The previous prime is 247390244861. The next prime is 247390244921. The reversal of 247390244897 is 798442093742.

It is a cyclic number.

It is not a de Polignac number, because 247390244897 - 2¹⁸ = 247389982753 is a prime.

It is a super-2 number, since 2×247390244897² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247390244807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7309508 + ... + 7343274.

It is an arithmetic number, because the mean of its divisors is an integer number (15745680720).

Almost surely, 2^247390244897 is an apocalyptic number.

It is an amenable number.

247390244897 is a deficient number, since it is larger than the sum of its proper divisors (4540646623).

247390244897 is a wasteful number, since it uses less digits than its factorization.

247390244897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34432.

The product of its (nonzero) digits is 24385536, while the sum is 59.

The spelling of 247390244897 in words is "two hundred forty-seven billion, three hundred ninety million, two hundred forty-four thousand, eight hundred ninety-seven".