71601655504 has 10 divisors (see below), whose sum is σ = 138728207570. Its totient is φ = 35800827744.

The previous prime is 71601655471. The next prime is 71601655507. The reversal of 71601655504 is 40555610617.

It can be written as a sum of positive squares in only one way, i.e., 68826473104 + 2775182400 = 262348^2 + 52680^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71601655507) 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 as a sum of consecutive naturals, namely, 2237551719 + ... + 2237551750.

It is an arithmetic number, because the mean of its divisors is an integer number (13872820757).

Almost surely, 2^71601655504 is an apocalyptic number.

It is an amenable number.

71601655504 is a deficient number, since it is larger than the sum of its proper divisors (67126552066).

71601655504 is a wasteful number, since it uses less digits than its factorization.

71601655504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475103477 (or 4475103471 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 71601655504 in words is "seventy-one billion, six hundred one million, six hundred fifty-five thousand, five hundred four".