40161111606585 has 24 divisors (see below), whose sum is σ = 69734935487880. Its totient is φ = 21381615820032.

The previous prime is 40161111606559. The next prime is 40161111606647. The reversal of 40161111606585 is 58560611116104.

40161111606585 is a `hidden beast` number, since 4 + 0 + 1 + 6 + 1 + 1 + 1 + 1 + 60 + 6 + 585 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19713002409 + 40141398604176 = 140403^2 + 6335724^2 .

It is not a de Polignac number, because 40161111606585 - 2¹⁹ = 40161111082297 is a prime.

It is a super-2 number, since 2×40161111606585² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40161111606585.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 784217934 + ... + 784269143.

It is an arithmetic number, because the mean of its divisors is an integer number (2905622311995).

Almost surely, 2^{40161111606585} is an apocalyptic number.

40161111606585 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40161111606585 is a deficient number, since it is larger than the sum of its proper divisors (29573823881295).

40161111606585 is a wasteful number, since it uses less digits than its factorization.

40161111606585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568487657 (or 1568487654 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 40161111606585 in words is "forty trillion, one hundred sixty-one billion, one hundred eleven million, six hundred six thousand, five hundred eighty-five".