2545709128 has 64 divisors (see below), whose sum is σ = 4962908160. Its totient is φ = 1223479296.

The previous prime is 2545709123. The next prime is 2545709137. The reversal of 2545709128 is 8219075452.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2545709123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8133100 + ... + 8133412.

It is an arithmetic number, because the mean of its divisors is an integer number (77545440).

Almost surely, 2^2545709128 is an apocalyptic number.

It is an amenable number.

2545709128 is a deficient number, since it is larger than the sum of its proper divisors (2417199032).

2545709128 is a wasteful number, since it uses less digits than its factorization.

2545709128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 2545709128 is about 50455.0208403485. The cubic root of 2545709128 is about 1365.4304801376.

The spelling of 2545709128 in words is "two billion, five hundred forty-five million, seven hundred nine thousand, one hundred twenty-eight".