65939045747 has 4 divisors (see below), whose sum is σ = 65985255336. Its totient is φ = 65892836160.

The previous prime is 65939045717. The next prime is 65939045779. The reversal of 65939045747 is 74754093956.

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

It is a cyclic number.

It is not a de Polignac number, because 65939045747 - 2¹⁰ = 65939044723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65939045717) 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, 23102654 + ... + 23105507.

It is an arithmetic number, because the mean of its divisors is an integer number (16496313834).

Almost surely, 2^65939045747 is an apocalyptic number.

65939045747 is a deficient number, since it is larger than the sum of its proper divisors (46209589).

65939045747 is a wasteful number, since it uses less digits than its factorization.

65939045747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46209588.

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 65939045747 in words is "sixty-five billion, nine hundred thirty-nine million, forty-five thousand, seven hundred forty-seven".