71240621330885 has 16 divisors (see below), whose sum is σ = 86483695997952. Its totient is φ = 56332997947200.

The previous prime is 71240621330881. The next prime is 71240621330899. The reversal of 71240621330885 is 58803312604217.

It is not a de Polignac number, because 71240621330885 - 2² = 71240621330881 is a prime.

It is a super-2 number, since 2×71240621330885² (a number of 29 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 (71240621330881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237421751 + ... + 237721620.

It is an arithmetic number, because the mean of its divisors is an integer number (5405230999872).

Almost surely, 2^{71240621330885} is an apocalyptic number.

It is an amenable number.

71240621330885 is a deficient number, since it is larger than the sum of its proper divisors (15243074667067).

71240621330885 is a wasteful number, since it uses less digits than its factorization.

71240621330885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475143724.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 71240621330885 in words is "seventy-one trillion, two hundred forty billion, six hundred twenty-one million, three hundred thirty thousand, eight hundred eighty-five".