2045312762805 has 24 divisors (see below), whose sum is σ = 3817917158328. Its totient is φ = 1006923206016.

The previous prime is 2045312762797. The next prime is 2045312762819. The reversal of 2045312762805 is 5082672135402.

2045312762805 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 3 + 12 + 7 + 628 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 138817346724 + 1906495416081 = 372582^2 + 1380759^2 .

It is not a de Polignac number, because 2045312762805 - 2³ = 2045312762797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1748129982 + ... + 1748131151.

It is an arithmetic number, because the mean of its divisors is an integer number (159079881597).

Almost surely, 2^{2045312762805} is an apocalyptic number.

It is an amenable number.

2045312762805 is a deficient number, since it is larger than the sum of its proper divisors (1772604395523).

2045312762805 is a wasteful number, since it uses less digits than its factorization.

2045312762805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496261157 (or 3496261154 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 2045312762805 in words is "two trillion, forty-five billion, three hundred twelve million, seven hundred sixty-two thousand, eight hundred five".