2545138776 has 64 divisors (see below), whose sum is σ = 6444702720. Its totient is φ = 837527040.

The previous prime is 2545138763. The next prime is 2545138847. The reversal of 2545138776 is 6778315452.

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, 733221 + ... + 736683.

It is an arithmetic number, because the mean of its divisors is an integer number (100698480).

Almost surely, 2^2545138776 is an apocalyptic number.

It is an amenable number.

2545138776 is an abundant number, since it is smaller than the sum of its proper divisors (3899563944).

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

2545138776 is a wasteful number, since it uses less digits than its factorization.

2545138776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3852 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 2545138776 is about 50449.3684400509. The cubic root of 2545138776 is about 1365.3285001478.

The spelling of 2545138776 in words is "two billion, five hundred forty-five million, one hundred thirty-eight thousand, seven hundred seventy-six".