42855069745 has 16 divisors (see below), whose sum is σ = 51652530000. Its totient is φ = 34133299200.

The previous prime is 42855069743. The next prime is 42855069749. The reversal of 42855069745 is 54796055824.

It can be written as a sum of positive squares in 8 ways, for example, as 6964903936 + 35890165809 = 83456^2 + 189447^2 .

It is not a de Polignac number, because 42855069745 - 2¹ = 42855069743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42855069743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742635 + ... + 1767055.

It is an arithmetic number, because the mean of its divisors is an integer number (3228283125).

Almost surely, 2^42855069745 is an apocalyptic number.

It is an amenable number.

42855069745 is a deficient number, since it is larger than the sum of its proper divisors (8797460255).

42855069745 is a wasteful number, since it uses less digits than its factorization.

42855069745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25956.

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 42855069745 in words is "forty-two billion, eight hundred fifty-five million, sixty-nine thousand, seven hundred forty-five".