71709000651 has 96 divisors (see below), whose sum is σ = 118506240000. Its totient is φ = 42761841408.

The previous prime is 71709000647. The next prime is 71709000661. The reversal of 71709000651 is 15600090717.

It is not a de Polignac number, because 71709000651 - 2² = 71709000647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71709000641) 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, 17708275 + ... + 17712323.

It is an arithmetic number, because the mean of its divisors is an integer number (1234440000).

Almost surely, 2^71709000651 is an apocalyptic number.

71709000651 is the 218646-th pentagonal number.

71709000651 is a deficient number, since it is larger than the sum of its proper divisors (46797239349).

71709000651 is a wasteful number, since it uses less digits than its factorization.

71709000651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198 (or 4173 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The spelling of 71709000651 in words is "seventy-one billion, seven hundred nine million, six hundred fifty-one", and thus it is an aban number.