28766669211 has 32 divisors (see below), whose sum is σ = 48804825600. Its totient is φ = 16404564960.

The previous prime is 28766669189. The next prime is 28766669213. The reversal of 28766669211 is 11296666782.

It is not a de Polignac number, because 28766669211 - 2⁶ = 28766669147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28766669213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62196 + ... + 247793.

It is an arithmetic number, because the mean of its divisors is an integer number (1525150800).

Almost surely, 2^28766669211 is an apocalyptic number.

28766669211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28766669211 is a deficient number, since it is larger than the sum of its proper divisors (20038156389).

28766669211 is a wasteful number, since it uses less digits than its factorization.

28766669211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310496 (or 310490 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 28766669211 in words is "twenty-eight billion, seven hundred sixty-six million, six hundred sixty-nine thousand, two hundred eleven".