40865891705 has 8 divisors (see below), whose sum is σ = 49042295304. Its totient is φ = 32690563200.

The previous prime is 40865891699. The next prime is 40865891777. The reversal of 40865891705 is 50719856804.

It can be written as a sum of positive squares in 4 ways, for example, as 28088754409 + 12777137296 = 167597^2 + 113036^2 .

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

It is not a de Polignac number, because 40865891705 - 2¹⁴ = 40865875321 is a prime.

It is a super-2 number, since 2×40865891705² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 182636 + ... + 339245.

It is an arithmetic number, because the mean of its divisors is an integer number (6130286913).

Almost surely, 2^40865891705 is an apocalyptic number.

It is an amenable number.

40865891705 is a deficient number, since it is larger than the sum of its proper divisors (8176403599).

40865891705 is a wasteful number, since it uses less digits than its factorization.

40865891705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537547.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 40865891705 in words is "forty billion, eight hundred sixty-five million, eight hundred ninety-one thousand, seven hundred five".