41640664343251 has 4 divisors (see below), whose sum is σ = 41668222693104. Its totient is φ = 41613105993400.

The previous prime is 41640664343197. The next prime is 41640664343303. The reversal of 41640664343251 is 15234346604614.

41640664343251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-41640664343251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41640664343195 and 41640664343204.

It is not an unprimeable number, because it can be changed into a prime (41640664343651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13779172660 + ... + 13779175681.

It is an arithmetic number, because the mean of its divisors is an integer number (10417055673276).

Almost surely, 2^{41640664343251} is an apocalyptic number.

41640664343251 is a deficient number, since it is larger than the sum of its proper divisors (27558349853).

41640664343251 is a wasteful number, since it uses less digits than its factorization.

41640664343251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27558349852.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 41640664343251 in words is "forty-one trillion, six hundred forty billion, six hundred sixty-four million, three hundred forty-three thousand, two hundred fifty-one".