71503645630613 has 16 divisors (see below), whose sum is σ = 82364770992000. Its totient is φ = 60804725870592.

The previous prime is 71503645630579. The next prime is 71503645630663. The reversal of 71503645630613 is 31603654630517.

It is a cyclic number.

It is not a de Polignac number, because 71503645630613 - 2⁸ = 71503645630357 is a prime.

It is a super-2 number, since 2×71503645630613² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71503645630663) 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 15 ways as a sum of consecutive naturals, for example, 24707048 + ... + 27448961.

It is an arithmetic number, because the mean of its divisors is an integer number (5147798187000).

Almost surely, 2^{71503645630613} is an apocalyptic number.

It is an amenable number.

71503645630613 is a deficient number, since it is larger than the sum of its proper divisors (10861125361387).

71503645630613 is a wasteful number, since it uses less digits than its factorization.

71503645630613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52157564.

The product of its (nonzero) digits is 4082400, while the sum is 50.

The spelling of 71503645630613 in words is "seventy-one trillion, five hundred three billion, six hundred forty-five million, six hundred thirty thousand, six hundred thirteen".