2045640078208 has 32 divisors (see below), whose sum is σ = 4075488252360. Its totient is φ = 1022772438528.

The previous prime is 2045640078161. The next prime is 2045640078259. The reversal of 2045640078208 is 8028700465402.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 2474010 + ... + 3195622.

Almost surely, 2^{2045640078208} is an apocalyptic number.

It is an amenable number.

2045640078208 is a deficient number, since it is larger than the sum of its proper divisors (2029848174152).

2045640078208 is an equidigital number, since it uses as much as digits as its factorization.

2045640078208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743774 (or 743762 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 2045640078208 in words is "two trillion, forty-five billion, six hundred forty million, seventy-eight thousand, two hundred eight".