40657648523 has 2 divisors, whose sum is σ = 40657648524. Its totient is φ = 40657648522.

The previous prime is 40657648513. The next prime is 40657648529. The reversal of 40657648523 is 32584675604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40657648523 - 2¹⁴ = 40657632139 is a prime.

It is not a weakly prime, because it can be changed into another prime (40657648529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20328824261 + 20328824262.

It is an arithmetic number, because the mean of its divisors is an integer number (20328824262).

Almost surely, 2^40657648523 is an apocalyptic number.

40657648523 is a deficient number, since it is larger than the sum of its proper divisors (1).

40657648523 is an equidigital number, since it uses as much as digits as its factorization.

40657648523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 40657648523 in words is "forty billion, six hundred fifty-seven million, six hundred forty-eight thousand, five hundred twenty-three".