71605342605 has 16 divisors (see below), whose sum is σ = 118519188480. Its totient is φ = 36872635968.

The previous prime is 71605342561. The next prime is 71605342621. The reversal of 71605342605 is 50624350617.

It is not a de Polignac number, because 71605342605 - 2⁷ = 71605342477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82304557 + ... + 82305426.

It is an arithmetic number, because the mean of its divisors is an integer number (7407449280).

Almost surely, 2^71605342605 is an apocalyptic number.

It is an amenable number.

71605342605 is a deficient number, since it is larger than the sum of its proper divisors (46913845875).

71605342605 is a wasteful number, since it uses less digits than its factorization.

71605342605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164610020.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 71605342605 in words is "seventy-one billion, six hundred five million, three hundred forty-two thousand, six hundred five".