40855617751 has 4 divisors (see below), whose sum is σ = 43998357592. Its totient is φ = 37712877912.

The previous prime is 40855617731. The next prime is 40855617763. The reversal of 40855617751 is 15771655804.

It is a happy number.

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 40855617751 - 2³¹ = 38708134103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40855617695 and 40855617704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40855617731) 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, 1571369901 + ... + 1571369926.

It is an arithmetic number, because the mean of its divisors is an integer number (10999589398).

Almost surely, 2^40855617751 is an apocalyptic number.

40855617751 is a deficient number, since it is larger than the sum of its proper divisors (3142739841).

40855617751 is a wasteful number, since it uses less digits than its factorization.

40855617751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142739840.

The product of its (nonzero) digits is 1176000, while the sum is 49.

The spelling of 40855617751 in words is "forty billion, eight hundred fifty-five million, six hundred seventeen thousand, seven hundred fifty-one".