71425687346 has 16 divisors (see below), whose sum is σ = 115463562648. Its totient is φ = 32941814400.

The previous prime is 71425687339. The next prime is 71425687351. The reversal of 71425687346 is 64378652417.

It can be written as a sum of positive squares in 4 ways, for example, as 63498456121 + 7927231225 = 251989^2 + 89035^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958715 + ... + 1030526.

Almost surely, 2^71425687346 is an apocalyptic number.

71425687346 is a deficient number, since it is larger than the sum of its proper divisors (44037875302).

71425687346 is a wasteful number, since it uses less digits than its factorization.

71425687346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990637.

The product of its digits is 6773760, while the sum is 53.

The spelling of 71425687346 in words is "seventy-one billion, four hundred twenty-five million, six hundred eighty-seven thousand, three hundred forty-six".