1085420565387 has 16 divisors (see below), whose sum is σ = 1630678786560. Its totient is φ = 713421966600.

The previous prime is 1085420565379. The next prime is 1085420565389. The reversal of 1085420565387 is 7835650245801.

1085420565387 is a `hidden beast` number, since 1 + 0 + 8 + 5 + 42 + 0 + 565 + 38 + 7 = 666.

It is not a de Polignac number, because 1085420565387 - 2³ = 1085420565379 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1085420565389) 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 15 ways as a sum of consecutive naturals, for example, 283102039 + ... + 283105872.

It is an arithmetic number, because the mean of its divisors is an integer number (101917424160).

Almost surely, 2^{1085420565387} is an apocalyptic number.

1085420565387 is a deficient number, since it is larger than the sum of its proper divisors (545258221173).

1085420565387 is an equidigital number, since it uses as much as digits as its factorization.

1085420565387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566207991 (or 566207985 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 1085420565387 in words is "one trillion, eighty-five billion, four hundred twenty million, five hundred sixty-five thousand, three hundred eighty-seven".