648118443453 has 32 divisors (see below), whose sum is σ = 961201274880. Its totient is φ = 385755549120.

The previous prime is 648118443409. The next prime is 648118443509. The reversal of 648118443453 is 354344811846.

It is not a de Polignac number, because 648118443453 - 2¹⁰ = 648118442429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648118443396 and 648118443405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648118443353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1974250 + ... + 2279012.

It is an arithmetic number, because the mean of its divisors is an integer number (30037539840).

Almost surely, 2^648118443453 is an apocalyptic number.

It is an amenable number.

648118443453 is a deficient number, since it is larger than the sum of its proper divisors (313082831427).

648118443453 is a wasteful number, since it uses less digits than its factorization.

648118443453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306569.

The product of its digits is 4423680, while the sum is 51.

The spelling of 648118443453 in words is "six hundred forty-eight billion, one hundred eighteen million, four hundred forty-three thousand, four hundred fifty-three".