40085140651 has 4 divisors (see below), whose sum is σ = 40938016032. Its totient is φ = 39232265272.

The previous prime is 40085140649. The next prime is 40085140663. The reversal of 40085140651 is 15604158004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40085140651 - 2¹ = 40085140649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40085140631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426437620 + ... + 426437713.

It is an arithmetic number, because the mean of its divisors is an integer number (10234504008).

Almost surely, 2^40085140651 is an apocalyptic number.

40085140651 is a deficient number, since it is larger than the sum of its proper divisors (852875381).

40085140651 is an equidigital number, since it uses as much as digits as its factorization.

40085140651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852875380.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 40085140651 its reverse (15604158004), we get a palindrome (55689298655).

The spelling of 40085140651 in words is "forty billion, eighty-five million, one hundred forty thousand, six hundred fifty-one".