39648195541 has 2 divisors, whose sum is σ = 39648195542. Its totient is φ = 39648195540.

The previous prime is 39648195497. The next prime is 39648195589. The reversal of 39648195541 is 14559184693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37987959025 + 1660236516 = 194905^2 + 40746^2 .

It is a cyclic number.

It is not a de Polignac number, because 39648195541 - 2¹⁹ = 39647671253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39648195241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19824097770 + 19824097771.

It is an arithmetic number, because the mean of its divisors is an integer number (19824097771).

Almost surely, 2^39648195541 is an apocalyptic number.

It is an amenable number.

39648195541 is a deficient number, since it is larger than the sum of its proper divisors (1).

39648195541 is an equidigital number, since it uses as much as digits as its factorization.

39648195541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 55.

The spelling of 39648195541 in words is "thirty-nine billion, six hundred forty-eight million, one hundred ninety-five thousand, five hundred forty-one".