247235156041 has 6 divisors (see below), whose sum is σ = 262633885790. Its totient is φ = 232691911296.

The previous prime is 247235156033. The next prime is 247235156059. The reversal of 247235156041 is 140651532742.

It can be written as a sum of positive squares in 3 ways, for example, as 31549219641 + 215685936400 = 177621^2 + 464420^2 .

It is not a de Polignac number, because 247235156041 - 2³ = 247235156033 is a prime.

It is a super-2 number, since 2×247235156041² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247235155985 and 247235156003.

It is not an unprimeable number, because it can be changed into a prime (247235157041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427742196 + ... + 427742773.

Almost surely, 2^247235156041 is an apocalyptic number.

It is an amenable number.

247235156041 is a deficient number, since it is larger than the sum of its proper divisors (15398729749).

247235156041 is an equidigital number, since it uses as much as digits as its factorization.

247235156041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855485003 (or 855484986 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 247235156041 its reverse (140651532742), we get a palindrome (387886688783).

The spelling of 247235156041 in words is "two hundred forty-seven billion, two hundred thirty-five million, one hundred fifty-six thousand, forty-one".