1648686396426 has 8 divisors (see below), whose sum is σ = 3297372792864. Its totient is φ = 549562132140.

The previous prime is 1648686396391. The next prime is 1648686396437. The reversal of 1648686396426 is 6246936868461.

It is a sphenic number, since it is the product of 3 distinct primes.

1648686396426 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137390533030 + ... + 137390533041.

It is an arithmetic number, because the mean of its divisors is an integer number (412171599108).

Almost surely, 2^{1648686396426} is an apocalyptic number.

1648686396426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1648686396426 is a wasteful number, since it uses less digits than its factorization.

1648686396426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274781066076.

The product of its digits is 429981696, while the sum is 69.

The spelling of 1648686396426 in words is "one trillion, six hundred forty-eight billion, six hundred eighty-six million, three hundred ninety-six thousand, four hundred twenty-six".