3161665312405 has 32 divisors (see below), whose sum is σ = 4184613354240. Its totient is φ = 2282515614720.

The previous prime is 3161665312397. The next prime is 3161665312423. The reversal of 3161665312405 is 5042135661613.

It is not a de Polignac number, because 3161665312405 - 2³ = 3161665312397 is a prime.

It is a super-2 number, since 2×3161665312405² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2475462 + ... + 3528631.

It is an arithmetic number, because the mean of its divisors is an integer number (130769167320).

Almost surely, 2^{3161665312405} is an apocalyptic number.

It is an amenable number.

3161665312405 is a deficient number, since it is larger than the sum of its proper divisors (1022948041835).

3161665312405 is a wasteful number, since it uses less digits than its factorization.

3161665312405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004381.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 3161665312405 in words is "three trillion, one hundred sixty-one billion, six hundred sixty-five million, three hundred twelve thousand, four hundred five".