2681578445 has 32 divisors (see below), whose sum is σ = 3970176000. Its totient is φ = 1693198080.

The previous prime is 2681578439. The next prime is 2681578447. The reversal of 2681578445 is 5448751862.

It is not a de Polignac number, because 2681578445 - 2⁸ = 2681578189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2681578393 and 2681578402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681578447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184556 + ... + 198554.

It is an arithmetic number, because the mean of its divisors is an integer number (124068000).

Almost surely, 2^2681578445 is an apocalyptic number.

It is an amenable number.

2681578445 is a deficient number, since it is larger than the sum of its proper divisors (1288597555).

2681578445 is a wasteful number, since it uses less digits than its factorization.

2681578445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14445.

The product of its digits is 2150400, while the sum is 50.

The square root of 2681578445 is about 51783.9593407070. The cubic root of 2681578445 is about 1389.3025580018.

The spelling of 2681578445 in words is "two billion, six hundred eighty-one million, five hundred seventy-eight thousand, four hundred forty-five".