648359418953 has 4 divisors (see below), whose sum is σ = 648363914880. Its totient is φ = 648354923028.

The previous prime is 648359418893. The next prime is 648359418979. The reversal of 648359418953 is 359814953846.

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 a de Polignac number, because none of the positive numbers 2^k-648359418953 is a prime.

It is a super-2 number, since 2×648359418953² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648359418953.

It is not an unprimeable number, because it can be changed into a prime (648359418983) 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, 2024225 + ... + 2322542.

It is an arithmetic number, because the mean of its divisors is an integer number (162090978720).

Almost surely, 2^648359418953 is an apocalyptic number.

It is an amenable number.

648359418953 is a deficient number, since it is larger than the sum of its proper divisors (4495927).

648359418953 is a wasteful number, since it uses less digits than its factorization.

648359418953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495926.

The product of its digits is 111974400, while the sum is 65.

The spelling of 648359418953 in words is "six hundred forty-eight billion, three hundred fifty-nine million, four hundred eighteen thousand, nine hundred fifty-three".