64001650001 has 4 divisors (see below), whose sum is σ = 64006440000. Its totient is φ = 63996860004.

The previous prime is 64001649949. The next prime is 64001650019. The reversal of 64001650001 is 10005610046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64001650001 - 2⁶ = 64001649937 is a prime.

It is a super-2 number, since 2×64001650001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64001650091) 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, 2374901 + ... + 2401698.

It is an arithmetic number, because the mean of its divisors is an integer number (16001610000).

Almost surely, 2^64001650001 is an apocalyptic number.

It is an amenable number.

64001650001 is a deficient number, since it is larger than the sum of its proper divisors (4789999).

64001650001 is a wasteful number, since it uses less digits than its factorization.

64001650001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789998.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 64001650001 in words is "sixty-four billion, one million, six hundred fifty thousand, one".