71705170945 has 32 divisors (see below), whose sum is σ = 90746979840. Its totient is φ = 54334022400.

The previous prime is 71705170931. The next prime is 71705170963. The reversal of 71705170945 is 54907150717.

It is not a de Polignac number, because 71705170945 - 2²³ = 71696782337 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 71705170895 and 71705170904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068895 + ... + 1133995.

It is an arithmetic number, because the mean of its divisors is an integer number (2835843120).

Almost surely, 2^71705170945 is an apocalyptic number.

It is an amenable number.

71705170945 is a deficient number, since it is larger than the sum of its proper divisors (19041808895).

71705170945 is a wasteful number, since it uses less digits than its factorization.

71705170945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65305.

The product of its (nonzero) digits is 308700, while the sum is 46.

The spelling of 71705170945 in words is "seventy-one billion, seven hundred five million, one hundred seventy thousand, nine hundred forty-five".