2545686432 has 72 divisors (see below), whose sum is σ = 7434983556. Its totient is φ = 825624576.

The previous prime is 2545686431. The next prime is 2545686463. The reversal of 2545686432 is 2346865452.

2545686432 is a `hidden beast` number, since 2 + 54 + 568 + 6 + 4 + 32 = 666.

2545686432 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2175662736 + 370023696 = 46644^2 + 19236^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (2545686431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108793 + ... + 130104.

Almost surely, 2^2545686432 is an apocalyptic number.

It is an amenable number.

2545686432 is an abundant number, since it is smaller than the sum of its proper divisors (4889297124).

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

2545686432 is a wasteful number, since it uses less digits than its factorization.

2545686432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238950 (or 238939 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The square root of 2545686432 is about 50454.7959266510. The cubic root of 2545686432 is about 1365.4264223419.

The spelling of 2545686432 in words is "two billion, five hundred forty-five million, six hundred eighty-six thousand, four hundred thirty-two".