20648330161499 has 4 divisors (see below), whose sum is σ = 20648496956064. Its totient is φ = 20648163366936.

The previous prime is 20648330161483. The next prime is 20648330161577. The reversal of 20648330161499 is 99416103384602.

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

It is a cyclic number.

It is not a de Polignac number, because 20648330161499 - 2⁴ = 20648330161483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20648330161439) 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, 83211452 + ... + 83459225.

It is an arithmetic number, because the mean of its divisors is an integer number (5162124239016).

Almost surely, 2^{20648330161499} is an apocalyptic number.

20648330161499 is a deficient number, since it is larger than the sum of its proper divisors (166794565).

20648330161499 is a wasteful number, since it uses less digits than its factorization.

20648330161499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166794564.

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 20648330161499 in words is "twenty trillion, six hundred forty-eight billion, three hundred thirty million, one hundred sixty-one thousand, four hundred ninety-nine".