5681916040329 has 45 divisors (see below), whose sum is σ = 8593988437309. Its totient is φ = 3741133377960.

The previous prime is 5681916040327. The next prime is 5681916040349. The reversal of 5681916040329 is 9230406191865.

The square root of 5681916040329 is 2383677.

It is a perfect power (a square), and thus also a powerful number.

5681916040329 is a `hidden beast` number, since 5 + 6 + 8 + 1 + 9 + 1 + 604 + 0 + 3 + 29 = 666.

It is not a de Polignac number, because 5681916040329 - 2¹ = 5681916040327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5681916040327) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1780605124 + ... + 1780608314.

Almost surely, 2^{5681916040329} is an apocalyptic number.

5681916040329 is the 2383677-th square number.

5681916040329 is the 1191839-th centered octagonal number.

It is an amenable number.

5681916040329 is a deficient number, since it is larger than the sum of its proper divisors (2912072396980).

5681916040329 is an frugal number, since it uses more digits than its factorization.

5681916040329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560 (or 3277 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 5681916040329 in words is "five trillion, six hundred eighty-one billion, nine hundred sixteen million, forty thousand, three hundred twenty-nine".