2085261796645 has 16 divisors (see below), whose sum is σ = 2504245032432. Its totient is φ = 1666922664960.

The previous prime is 2085261796619. The next prime is 2085261796679. The reversal of 2085261796645 is 5466971625802.

It can be written as a sum of positive squares in 8 ways, for example, as 222929399716 + 1862332396929 = 472154^2 + 1364673^2 .

It is not a de Polignac number, because 2085261796645 - 2⁵ = 2085261796613 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 38579659 + ... + 38633671.

It is an arithmetic number, because the mean of its divisors is an integer number (156515314527).

Almost surely, 2^{2085261796645} is an apocalyptic number.

It is an amenable number.

2085261796645 is a deficient number, since it is larger than the sum of its proper divisors (418983235787).

2085261796645 is a wasteful number, since it uses less digits than its factorization.

2085261796645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59832.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 2085261796645 in words is "two trillion, eighty-five billion, two hundred sixty-one million, seven hundred ninety-six thousand, six hundred forty-five".