2005902081705 has 16 divisors (see below), whose sum is σ = 3212054786880. Its totient is φ = 1068943958208.

The previous prime is 2005902081691. The next prime is 2005902081713. The reversal of 2005902081705 is 5071802095002.

It is not a de Polignac number, because 2005902081705 - 2¹² = 2005902077609 is a prime.

It is a super-2 number, since 2×2005902081705² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54386287 + ... + 54423156.

It is an arithmetic number, because the mean of its divisors is an integer number (200753424180).

Almost surely, 2^{2005902081705} is an apocalyptic number.

It is an amenable number.

2005902081705 is a deficient number, since it is larger than the sum of its proper divisors (1206152705175).

2005902081705 is a wasteful number, since it uses less digits than its factorization.

2005902081705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108810680.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 2005902081705 in words is "two trillion, five billion, nine hundred two million, eighty-one thousand, seven hundred five".