71642137346 has 16 divisors (see below), whose sum is σ = 115853156664. Its totient is φ = 33030301824.

The previous prime is 71642137321. The next prime is 71642137379. The reversal of 71642137346 is 64373124617.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7309395025 + 64332742321 = 85495^2 + 253639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71642137297 and 71642137306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446005 + ... + 1494728.

Almost surely, 2^71642137346 is an apocalyptic number.

71642137346 is a deficient number, since it is larger than the sum of its proper divisors (44211019318).

71642137346 is a wasteful number, since it uses less digits than its factorization.

71642137346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941685.

The product of its digits is 508032, while the sum is 44.

The spelling of 71642137346 in words is "seventy-one billion, six hundred forty-two million, one hundred thirty-seven thousand, three hundred forty-six".