40384785181 has 16 divisors (see below), whose sum is σ = 43806784000. Its totient is φ = 37008690048.

The previous prime is 40384785157. The next prime is 40384785241. The reversal of 40384785181 is 18158748304.

It is a cyclic number.

It is not a de Polignac number, because 40384785181 - 2⁷ = 40384785053 is a prime.

It is a super-2 number, since 2×40384785181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40384785131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1165180 + ... + 1199338.

It is an arithmetic number, because the mean of its divisors is an integer number (2737924000).

Almost surely, 2^40384785181 is an apocalyptic number.

It is an amenable number.

40384785181 is a deficient number, since it is larger than the sum of its proper divisors (3421998819).

40384785181 is a wasteful number, since it uses less digits than its factorization.

40384785181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34828.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 40384785181 in words is "forty billion, three hundred eighty-four million, seven hundred eighty-five thousand, one hundred eighty-one".