2545021768 has 16 divisors (see below), whose sum is σ = 4775586480. Its totient is φ = 1271532048.

The previous prime is 2545021729. The next prime is 2545021781. The reversal of 2545021768 is 8671205452.

It is a self number, because there is not a number n which added to its sum of digits gives 2545021768.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111246 + ... + 132157.

It is an arithmetic number, because the mean of its divisors is an integer number (298474155).

Almost surely, 2^2545021768 is an apocalyptic number.

It is an amenable number.

2545021768 is a deficient number, since it is larger than the sum of its proper divisors (2230564712).

2545021768 is a wasteful number, since it uses less digits than its factorization.

2545021768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244716 (or 244712 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2545021768 is about 50448.2087689940. The cubic root of 2545021768 is about 1365.3075770182.

The spelling of 2545021768 in words is "two billion, five hundred forty-five million, twenty-one thousand, seven hundred sixty-eight".