40856672437 has 4 divisors (see below), whose sum is σ = 46693339936. Its totient is φ = 35020004940.

The previous prime is 40856672431. The next prime is 40856672443. The reversal of 40856672437 is 73427665804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40856672431) and next prime (40856672443).

It is a cyclic number.

It is not a de Polignac number, because 40856672437 - 2¹⁹ = 40856148149 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 (40856672431) 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 3 ways as a sum of consecutive naturals, for example, 2918333739 + ... + 2918333752.

It is an arithmetic number, because the mean of its divisors is an integer number (11673334984).

Almost surely, 2^40856672437 is an apocalyptic number.

It is an amenable number.

40856672437 is a deficient number, since it is larger than the sum of its proper divisors (5836667499).

40856672437 is an equidigital number, since it uses as much as digits as its factorization.

40856672437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5836667498.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 40856672437 in words is "forty billion, eight hundred fifty-six million, six hundred seventy-two thousand, four hundred thirty-seven".