39648968543 has 4 divisors (see below), whose sum is σ = 39684916128. Its totient is φ = 39613020960.

The previous prime is 39648968509. The next prime is 39648968549. The reversal of 39648968543 is 34586984693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34586984693 = 101 ⋅342445393.

It is a cyclic number.

It is not a de Polignac number, because 39648968543 - 2¹² = 39648964447 is a prime.

It is a super-3 number, since 3×39648968543³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39648968543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39648968549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17972138 + ... + 17974343.

It is an arithmetic number, because the mean of its divisors is an integer number (9921229032).

Almost surely, 2^39648968543 is an apocalyptic number.

39648968543 is a deficient number, since it is larger than the sum of its proper divisors (35947585).

39648968543 is a wasteful number, since it uses less digits than its factorization.

39648968543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35947584.

The product of its digits is 134369280, while the sum is 65.

The spelling of 39648968543 in words is "thirty-nine billion, six hundred forty-eight million, nine hundred sixty-eight thousand, five hundred forty-three".