65671722012005 has 32 divisors (see below), whose sum is σ = 82862668949760. Its totient is φ = 49895793884160.

The previous prime is 65671722011983. The next prime is 65671722012041. The reversal of 65671722012005 is 50021022717656.

It is not a de Polignac number, because 65671722012005 - 2²² = 65671717817701 is a prime.

It is a congruent number.

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, 2908307 + ... + 11823776.

It is an arithmetic number, because the mean of its divisors is an integer number (2589458404680).

Almost surely, 2^{65671722012005} is an apocalyptic number.

It is an amenable number.

65671722012005 is a deficient number, since it is larger than the sum of its proper divisors (17190946937755).

65671722012005 is a wasteful number, since it uses less digits than its factorization.

65671722012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14732621.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 65671722012005 in words is "sixty-five trillion, six hundred seventy-one billion, seven hundred twenty-two million, twelve thousand, five".