65519652001 has 4 divisors (see below), whose sum is σ = 65520536212. Its totient is φ = 65518767792.

The previous prime is 65519651999. The next prime is 65519652007. The reversal of 65519652001 is 10025691556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52418560401 + 13101091600 = 228951^2 + 114460^2 .

It is a cyclic number.

It is not a de Polignac number, because 65519652001 - 2¹ = 65519651999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65519652007) 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, 319650 + ... + 482923.

It is an arithmetic number, because the mean of its divisors is an integer number (16380134053).

Almost surely, 2^65519652001 is an apocalyptic number.

It is an amenable number.

65519652001 is a deficient number, since it is larger than the sum of its proper divisors (884211).

65519652001 is an equidigital number, since it uses as much as digits as its factorization.

65519652001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884210.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 65519652001 in words is "sixty-five billion, five hundred nineteen million, six hundred fifty-two thousand, one".