102805308827 has 8 divisors (see below), whose sum is σ = 111005534640. Its totient is φ = 94646815200.

The previous prime is 102805308811. The next prime is 102805308847. The reversal of 102805308827 is 728803508201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102805308827 - 2⁴ = 102805308811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102805308847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10427924 + ... + 10437777.

It is an arithmetic number, because the mean of its divisors is an integer number (13875691830).

Almost surely, 2^102805308827 is an apocalyptic number.

102805308827 is a deficient number, since it is larger than the sum of its proper divisors (8200225813).

102805308827 is a wasteful number, since it uses less digits than its factorization.

102805308827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20866093.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 102805308827 in words is "one hundred two billion, eight hundred five million, three hundred eight thousand, eight hundred twenty-seven".