71651634042736 has 60 divisors (see below), whose sum is σ = 152598496267336. Its totient is φ = 32567711679360.

The previous prime is 71651634042733. The next prime is 71651634042749. The reversal of 71651634042736 is 63724043615617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71651634042733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52365151 + ... + 53716033.

Almost surely, 2^{71651634042736} is an apocalyptic number.

It is an amenable number.

71651634042736 is an abundant number, since it is smaller than the sum of its proper divisors (80946862224600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71651634042736 is a wasteful number, since it uses less digits than its factorization.

71651634042736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378310 (or 1378293 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 55.

The spelling of 71651634042736 in words is "seventy-one trillion, six hundred fifty-one billion, six hundred thirty-four million, forty-two thousand, seven hundred thirty-six".