2071761320605 has 8 divisors (see below), whose sum is σ = 2487582061272. Its totient is φ = 1656430072128.

The previous prime is 2071761320591. The next prime is 2071761320617. The reversal of 2071761320605 is 5060231671702.

It can be written as a sum of positive squares in 4 ways, for example, as 592742930404 + 1479018390201 = 769898^2 + 1216149^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2071761320605 - 2¹⁹ = 2071760796317 is a prime.

It is a Duffinian number.

It is a congruent 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, 122363734 + ... + 122380663.

It is an arithmetic number, because the mean of its divisors is an integer number (310947757659).

Almost surely, 2^{2071761320605} is an apocalyptic number.

It is an amenable number.

2071761320605 is a deficient number, since it is larger than the sum of its proper divisors (415820740667).

2071761320605 is a wasteful number, since it uses less digits than its factorization.

2071761320605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244746095.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 2071761320605 in words is "two trillion, seventy-one billion, seven hundred sixty-one million, three hundred twenty thousand, six hundred five".