65683621641 has 8 divisors (see below), whose sum is σ = 95539813344. Its totient is φ = 39808255520.

The previous prime is 65683621639. The next prime is 65683621643. The reversal of 65683621641 is 14612638656.

It is an interprime number because it is at equal distance from previous prime (65683621639) and next prime (65683621643).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65683621641 - 2¹ = 65683621639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65683621643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995206356 + ... + 995206421.

It is an arithmetic number, because the mean of its divisors is an integer number (11942476668).

Almost surely, 2^65683621641 is an apocalyptic number.

It is an amenable number.

65683621641 is a deficient number, since it is larger than the sum of its proper divisors (29856191703).

65683621641 is a wasteful number, since it uses less digits than its factorization.

65683621641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990412791.

The product of its digits is 1244160, while the sum is 48.

The spelling of 65683621641 in words is "sixty-five billion, six hundred eighty-three million, six hundred twenty-one thousand, six hundred forty-one".