65241926643 has 4 divisors (see below), whose sum is σ = 86989235528. Its totient is φ = 43494617760.

The previous prime is 65241926639. The next prime is 65241926669. The reversal of 65241926643 is 34662914256.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65241926643 - 2² = 65241926639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65241926592 and 65241926601.

It is not an unprimeable number, because it can be changed into a prime (65241926543) 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, 10873654438 + ... + 10873654443.

It is an arithmetic number, because the mean of its divisors is an integer number (21747308882).

Almost surely, 2^65241926643 is an apocalyptic number.

65241926643 is a deficient number, since it is larger than the sum of its proper divisors (21747308885).

65241926643 is a wasteful number, since it uses less digits than its factorization.

65241926643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21747308884.

The product of its digits is 1866240, while the sum is 48.

The spelling of 65241926643 in words is "sixty-five billion, two hundred forty-one million, nine hundred twenty-six thousand, six hundred forty-three".