1085705427767 has 4 divisors (see below), whose sum is σ = 1085783950920. Its totient is φ = 1085626904616.

The previous prime is 1085705427757. The next prime is 1085705427787. The reversal of 1085705427767 is 7677245075801.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1085705427767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085705427757) 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, 39240833 + ... + 39268490.

It is an arithmetic number, because the mean of its divisors is an integer number (271445987730).

Almost surely, 2^{1085705427767} is an apocalyptic number.

1085705427767 is a deficient number, since it is larger than the sum of its proper divisors (78523153).

1085705427767 is an equidigital number, since it uses as much as digits as its factorization.

1085705427767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78523152.

The product of its (nonzero) digits is 23049600, while the sum is 59.

The spelling of 1085705427767 in words is "one trillion, eighty-five billion, seven hundred five million, four hundred twenty-seven thousand, seven hundred sixty-seven".