71585717146 has 8 divisors (see below), whose sum is σ = 113694962580. Its totient is φ = 33687396288.

The previous prime is 71585717123. The next prime is 71585717153. The reversal of 71585717146 is 64171758517.

It can be written as a sum of positive squares in 2 ways, for example, as 69833876121 + 1751841025 = 264261^2 + 41855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 71585717093 and 71585717102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052731101 + ... + 1052731168.

Almost surely, 2^71585717146 is an apocalyptic number.

71585717146 is a deficient number, since it is larger than the sum of its proper divisors (42109245434).

71585717146 is a wasteful number, since it uses less digits than its factorization.

71585717146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105462288.

The product of its digits is 1646400, while the sum is 52.

The spelling of 71585717146 in words is "seventy-one billion, five hundred eighty-five million, seven hundred seventeen thousand, one hundred forty-six".