28111051545 has 24 divisors (see below), whose sum is σ = 46582139136. Its totient is φ = 14475569472.

The previous prime is 28111051531. The next prime is 28111051567. The reversal of 28111051545 is 54515011182.

It is not a de Polignac number, because 28111051545 - 2¹² = 28111047449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1101577 + ... + 1126806.

It is an arithmetic number, because the mean of its divisors is an integer number (1940922464).

Almost surely, 2^28111051545 is an apocalyptic number.

It is an amenable number.

28111051545 is a deficient number, since it is larger than the sum of its proper divisors (18471087591).

28111051545 is a wasteful number, since it uses less digits than its factorization.

28111051545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228449 (or 2228420 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The spelling of 28111051545 in words is "twenty-eight billion, one hundred eleven million, fifty-one thousand, five hundred forty-five".