650000100501001 has 2 divisors, whose sum is σ = 650000100501002. Its totient is φ = 650000100501000.

The previous prime is 650000100500987. The next prime is 650000100501077. The reversal of 650000100501001 is 100105001000056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424399099700601 + 225601000800400 = 20600949^2 + 15020020^2 .

It is a cyclic number.

It is not a de Polignac number, because 650000100501001 - 2³⁵ = 649965740762633 is a prime.

It is a super-2 number, since 2×650000100501001² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 650000100501001.

It is not a weakly prime, because it can be changed into another prime (650000100501701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325000050250500 + 325000050250501.

It is an arithmetic number, because the mean of its divisors is an integer number (325000050250501).

Almost surely, 2^{650000100501001} is an apocalyptic number.

It is an amenable number.

650000100501001 is a deficient number, since it is larger than the sum of its proper divisors (1).

650000100501001 is an equidigital number, since it uses as much as digits as its factorization.

650000100501001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 650000100501001 its reverse (100105001000056), we get a palindrome (750105101501057).

The spelling of 650000100501001 in words is "six hundred fifty trillion, one hundred million, five hundred one thousand, one".