65646372063 has 8 divisors (see below), whose sum is σ = 88167390768. Its totient is φ = 43444800704.

The previous prime is 65646372059. The next prime is 65646372073. The reversal of 65646372063 is 36027364656.

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

It is a cyclic number.

It is not a de Polignac number, because 65646372063 - 2² = 65646372059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65646372023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79861356 + ... + 79862177.

It is an arithmetic number, because the mean of its divisors is an integer number (11020923846).

Almost surely, 2^65646372063 is an apocalyptic number.

65646372063 is a deficient number, since it is larger than the sum of its proper divisors (22521018705).

65646372063 is a wasteful number, since it uses less digits than its factorization.

65646372063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159723673.

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 65646372063 in words is "sixty-five billion, six hundred forty-six million, three hundred seventy-two thousand, sixty-three".