2840378628545 has 32 divisors (see below), whose sum is σ = 3459786570240. Its totient is φ = 2238223104000.

The previous prime is 2840378628533. The next prime is 2840378628553. The reversal of 2840378628545 is 5458268730482.

It is a happy number.

It is not a de Polignac number, because 2840378628545 - 2²⁰ = 2840377579969 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 514465385 + ... + 514470905.

It is an arithmetic number, because the mean of its divisors is an integer number (108118330320).

Almost surely, 2^{2840378628545} is an apocalyptic number.

It is an amenable number.

2840378628545 is a deficient number, since it is larger than the sum of its proper divisors (619407941695).

2840378628545 is a wasteful number, since it uses less digits than its factorization.

2840378628545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457.

The product of its (nonzero) digits is 103219200, while the sum is 62.

The spelling of 2840378628545 in words is "two trillion, eight hundred forty billion, three hundred seventy-eight million, six hundred twenty-eight thousand, five hundred forty-five".