648136247227 has 16 divisors (see below), whose sum is σ = 767726153920. Its totient is φ = 535571595648.

The previous prime is 648136247219. The next prime is 648136247233. The reversal of 648136247227 is 722742631846.

It is a cyclic number.

It is not a de Polignac number, because 648136247227 - 2³ = 648136247219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648136247207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11450928 + ... + 11507389.

It is an arithmetic number, because the mean of its divisors is an integer number (47982884620).

Almost surely, 2^648136247227 is an apocalyptic number.

648136247227 is a deficient number, since it is larger than the sum of its proper divisors (119589906693).

648136247227 is a wasteful number, since it uses less digits than its factorization.

648136247227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22958470.

The product of its digits is 5419008, while the sum is 52.

The spelling of 648136247227 in words is "six hundred forty-eight billion, one hundred thirty-six million, two hundred forty-seven thousand, two hundred twenty-seven".