71687230641 has 96 divisors (see below), whose sum is σ = 122138132480. Its totient is φ = 40121827200.

The previous prime is 71687230591. The next prime is 71687230649. The reversal of 71687230641 is 14603278617.

It is not a de Polignac number, because 71687230641 - 2⁶ = 71687230577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71687230649) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8747856 + ... + 8756046.

Almost surely, 2^71687230641 is an apocalyptic number.

It is an amenable number.

71687230641 is a deficient number, since it is larger than the sum of its proper divisors (50450901839).

71687230641 is a wasteful number, since it uses less digits than its factorization.

71687230641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8387 (or 8384 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 71687230641 in words is "seventy-one billion, six hundred eighty-seven million, two hundred thirty thousand, six hundred forty-one".