2745345540 has 144 divisors (see below), whose sum is σ = 8975316672. Its totient is φ = 625169664.

The previous prime is 2745345479. The next prime is 2745345557. The reversal of 2745345540 is 455435472.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 859827 + ... + 863013.

It is an arithmetic number, because the mean of its divisors is an integer number (62328588).

Almost surely, 2^2745345540 is an apocalyptic number.

2745345540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2745345540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4487658336).

2745345540 is an abundant number, since it is smaller than the sum of its proper divisors (6229971132).

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

2745345540 is a wasteful number, since it uses less digits than its factorization.

2745345540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506 (or 3497 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 39.

The square root of 2745345540 is about 52396.0450797577. The cubic root of 2745345540 is about 1400.2287959402.

The spelling of 2745345540 in words is "two billion, seven hundred forty-five million, three hundred forty-five thousand, five hundred forty".