1648207920563 has 4 divisors (see below), whose sum is σ = 1683276174240. Its totient is φ = 1613139666888.

The previous prime is 1648207920517. The next prime is 1648207920587. The reversal of 1648207920563 is 3650297028461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648207920563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1648207940563) 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, 17534126768 + ... + 17534126861.

It is an arithmetic number, because the mean of its divisors is an integer number (420819043560).

It is a 1-persistent number, because it is pandigital, but 2⋅1648207920563 = 3296415841126 is not.

Almost surely, 2^{1648207920563} is an apocalyptic number.

1648207920563 is a deficient number, since it is larger than the sum of its proper divisors (35068253677).

1648207920563 is an equidigital number, since it uses as much as digits as its factorization.

1648207920563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35068253676.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 1648207920563 in words is "one trillion, six hundred forty-eight billion, two hundred seven million, nine hundred twenty thousand, five hundred sixty-three".