28666071534675 has 24 divisors (see below), whose sum is σ = 47466490610880. Its totient is φ = 15265371805600.

The previous prime is 28666071534671. The next prime is 28666071534677. The reversal of 28666071534675 is 57643517066682.

It is a happy number.

It is not a de Polignac number, because 28666071534675 - 2² = 28666071534671 is a prime.

It is a super-2 number, since 2×28666071534675² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28666071534671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289946241 + ... + 290045090.

It is an arithmetic number, because the mean of its divisors is an integer number (1977770442120).

Almost surely, 2^{28666071534675} is an apocalyptic number.

28666071534675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28666071534675 is a deficient number, since it is larger than the sum of its proper divisors (18800419076205).

28666071534675 is a wasteful number, since it uses less digits than its factorization.

28666071534675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579992003 (or 579991998 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 66.

The spelling of 28666071534675 in words is "twenty-eight trillion, six hundred sixty-six billion, seventy-one million, five hundred thirty-four thousand, six hundred seventy-five".