40042655767 has 4 divisors (see below), whose sum is σ = 40048490416. Its totient is φ = 40036821120.

The previous prime is 40042655749. The next prime is 40042655837. The reversal of 40042655767 is 76755624004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40042655767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042655717) 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, 2907018 + ... + 2920759.

It is an arithmetic number, because the mean of its divisors is an integer number (10012122604).

Almost surely, 2^40042655767 is an apocalyptic number.

40042655767 is a deficient number, since it is larger than the sum of its proper divisors (5834649).

40042655767 is an equidigital number, since it uses as much as digits as its factorization.

40042655767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834648.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 40042655767 in words is "forty billion, forty-two million, six hundred fifty-five thousand, seven hundred sixty-seven".