40143655761 has 16 divisors (see below), whose sum is σ = 58400587200. Its totient is φ = 24325398720.

The previous prime is 40143655733. The next prime is 40143655763. The reversal of 40143655761 is 16755634104.

It is not a de Polignac number, because 40143655761 - 2⁵ = 40143655729 is a prime.

It is a super-2 number, since 2×40143655761² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143655763) 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, 103215 + ... + 301563.

It is an arithmetic number, because the mean of its divisors is an integer number (3650036700).

Almost surely, 2^40143655761 is an apocalyptic number.

It is an amenable number.

40143655761 is a deficient number, since it is larger than the sum of its proper divisors (18256931439).

40143655761 is a wasteful number, since it uses less digits than its factorization.

40143655761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204496.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 40143655761 in words is "forty billion, one hundred forty-three million, six hundred fifty-five thousand, seven hundred sixty-one".