71071547261 has 16 divisors (see below), whose sum is σ = 86375842560. Its totient is φ = 57583888320.

The previous prime is 71071547257. The next prime is 71071547353. The reversal of 71071547261 is 16274517017.

It is a cyclic number.

It is not a de Polignac number, because 71071547261 - 2² = 71071547257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71071547201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8564885 + ... + 8573178.

It is an arithmetic number, because the mean of its divisors is an integer number (5398490160).

Almost surely, 2^71071547261 is an apocalyptic number.

It is an amenable number.

71071547261 is a deficient number, since it is larger than the sum of its proper divisors (15304295299).

71071547261 is a wasteful number, since it uses less digits than its factorization.

71071547261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17138116.

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 71071547261 in words is "seventy-one billion, seventy-one million, five hundred forty-seven thousand, two hundred sixty-one".