28011757645 has 16 divisors (see below), whose sum is σ = 34199392320. Its totient is φ = 22020856704.

The previous prime is 28011757643. The next prime is 28011757651. The reversal of 28011757645 is 54675711082.

It is a cyclic number.

It is not a de Polignac number, because 28011757645 - 2¹ = 28011757643 is a prime.

It is a super-3 number, since 3×28011757645³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28011757595 and 28011757604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28011757643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34794 + ... + 239236.

It is an arithmetic number, because the mean of its divisors is an integer number (2137462020).

Almost surely, 2^28011757645 is an apocalyptic number.

It is an amenable number.

28011757645 is a deficient number, since it is larger than the sum of its proper divisors (6187634675).

28011757645 is a wasteful number, since it uses less digits than its factorization.

28011757645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204924.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 28011757645 in words is "twenty-eight billion, eleven million, seven hundred fifty-seven thousand, six hundred forty-five".