648585270169 has 4 divisors (see below), whose sum is σ = 682721337040. Its totient is φ = 614449203300.

The previous prime is 648585270139. The next prime is 648585270173. The reversal of 648585270169 is 961072585846.

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 648585270169 - 2¹⁵ = 648585237401 is a prime.

It is a super-2 number, since 2×648585270169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648585270139) 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 3 ways as a sum of consecutive naturals, for example, 17068033407 + ... + 17068033444.

It is an arithmetic number, because the mean of its divisors is an integer number (170680334260).

Almost surely, 2^648585270169 is an apocalyptic number.

It is an amenable number.

648585270169 is a deficient number, since it is larger than the sum of its proper divisors (34136066871).

648585270169 is a wasteful number, since it uses less digits than its factorization.

648585270169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34136066870.

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 648585270169 in words is "six hundred forty-eight billion, five hundred eighty-five million, two hundred seventy thousand, one hundred sixty-nine".