105728938847 has 4 divisors (see below), whose sum is σ = 120833072976. Its totient is φ = 90624804720.

The previous prime is 105728938841. The next prime is 105728938897. The reversal of 105728938847 is 748839827501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105728938847 - 2¹⁶ = 105728873311 is a prime.

It is a super-2 number, since 2×105728938847² (a number of 23 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 105728938847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105728938841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7552067054 + ... + 7552067067.

It is an arithmetic number, because the mean of its divisors is an integer number (30208268244).

Almost surely, 2^105728938847 is an apocalyptic number.

105728938847 is a deficient number, since it is larger than the sum of its proper divisors (15104134129).

105728938847 is an equidigital number, since it uses as much as digits as its factorization.

105728938847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15104134128.

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 105728938847 in words is "one hundred five billion, seven hundred twenty-eight million, nine hundred thirty-eight thousand, eight hundred forty-seven".