2840455217940 has 48 divisors (see below), whose sum is σ = 7954414731648. Its totient is φ = 757346141824.

The previous prime is 2840455217927. The next prime is 2840455217959. The reversal of 2840455217940 is 497125540482.

It is a happy 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, 2970747 + ... + 3808706.

It is an arithmetic number, because the mean of its divisors is an integer number (165716973576).

Almost surely, 2^{2840455217940} is an apocalyptic number.

2840455217940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2840455217940 is an abundant number, since it is smaller than the sum of its proper divisors (5113959513708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2840455217940 is a wasteful number, since it uses less digits than its factorization.

2840455217940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786448 (or 6786446 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 2840455217940 in words is "two trillion, eight hundred forty billion, four hundred fifty-five million, two hundred seventeen thousand, nine hundred forty".