71135161540121 has 8 divisors (see below), whose sum is σ = 81485081121024. Its totient is φ = 60832180370880.

The previous prime is 71135161540111. The next prime is 71135161540159. The reversal of 71135161540121 is 12104516153117.

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 71135161540121 - 2¹⁸ = 71135161277977 is a prime.

It is a super-2 number, since 2×71135161540121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71135161540111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11734599665 + ... + 11734605726.

It is an arithmetic number, because the mean of its divisors is an integer number (10185635140128).

Almost surely, 2^{71135161540121} is an apocalyptic number.

It is an amenable number.

71135161540121 is a deficient number, since it is larger than the sum of its proper divisors (10349919580903).

71135161540121 is a wasteful number, since it uses less digits than its factorization.

71135161540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469205831.

The product of its (nonzero) digits is 25200, while the sum is 38.

Adding to 71135161540121 its reverse (12104516153117), we get a palindrome (83239677693238).

The spelling of 71135161540121 in words is "seventy-one trillion, one hundred thirty-five billion, one hundred sixty-one million, five hundred forty thousand, one hundred twenty-one".