105210728285 has 16 divisors (see below), whose sum is σ = 135992123904. Its totient is φ = 77678367552.

The previous prime is 105210728221. The next prime is 105210728369. The reversal of 105210728285 is 582827012501.

It is a cyclic number.

It is not a de Polignac number, because 105210728285 - 2⁶ = 105210728221 is a prime.

It is a super-2 number, since 2×105210728285² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 165374 + ... + 487616.

It is an arithmetic number, because the mean of its divisors is an integer number (8499507744).

Almost surely, 2^105210728285 is an apocalyptic number.

It is an amenable number.

105210728285 is a deficient number, since it is larger than the sum of its proper divisors (30781395619).

105210728285 is a wasteful number, since it uses less digits than its factorization.

105210728285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327284.

The product of its (nonzero) digits is 89600, while the sum is 41.

The spelling of 105210728285 in words is "one hundred five billion, two hundred ten million, seven hundred twenty-eight thousand, two hundred eighty-five".