28437286168545 has 16 divisors (see below), whose sum is σ = 45507000225600. Its totient is φ = 15164105171264.

The previous prime is 28437286168507. The next prime is 28437286168553. The reversal of 28437286168545 is 54586168273482.

It is a cyclic number.

It is not a de Polignac number, because 28437286168545 - 2¹⁸ = 28437285906401 is a prime.

It is a super-2 number, since 2×28437286168545² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28437286168545.

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, 152869695 + ... + 153055604.

It is an arithmetic number, because the mean of its divisors is an integer number (2844187514100).

Almost surely, 2^{28437286168545} is an apocalyptic number.

It is an amenable number.

28437286168545 is a deficient number, since it is larger than the sum of its proper divisors (17069714057055).

28437286168545 is a wasteful number, since it uses less digits than its factorization.

28437286168545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305931504.

The product of its digits is 619315200, while the sum is 69.

The spelling of 28437286168545 in words is "twenty-eight trillion, four hundred thirty-seven billion, two hundred eighty-six million, one hundred sixty-eight thousand, five hundred forty-five".