28076681545 has 16 divisors (see below), whose sum is σ = 36908732160. Its totient is φ = 20333958400.

The previous prime is 28076681531. The next prime is 28076681579. The reversal of 28076681545 is 54518667082.

It is a happy number.

It is not a de Polignac number, because 28076681545 - 2⁵ = 28076681513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28076681492 and 28076681501.

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, 1054816 + ... + 1081105.

It is an arithmetic number, because the mean of its divisors is an integer number (2306795760).

Almost surely, 2^28076681545 is an apocalyptic number.

It is an amenable number.

28076681545 is a deficient number, since it is larger than the sum of its proper divisors (8832050615).

28076681545 is a wasteful number, since it uses less digits than its factorization.

28076681545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136176.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 28076681545 in words is "twenty-eight billion, seventy-six million, six hundred eighty-one thousand, five hundred forty-five".