40781001085 has 16 divisors (see below), whose sum is σ = 53458922880. Its totient is φ = 29618418240.

The previous prime is 40781001073. The next prime is 40781001091. The reversal of 40781001085 is 58010018704.

It is not a de Polignac number, because 40781001085 - 2¹¹ = 40780999037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40781001085.

It is a congruent number.

It is an unprimeable number.

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, 465465 + ... + 546094.

It is an arithmetic number, because the mean of its divisors is an integer number (3341182680).

Almost surely, 2^40781001085 is an apocalyptic number.

It is an amenable number.

40781001085 is a deficient number, since it is larger than the sum of its proper divisors (12677921795).

40781001085 is a wasteful number, since it uses less digits than its factorization.

40781001085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012308.

The product of its (nonzero) digits is 8960, while the sum is 34.

Adding to 40781001085 its reverse (58010018704), we get a palindrome (98791019789).

The spelling of 40781001085 in words is "forty billion, seven hundred eighty-one million, one thousand, eighty-five".