1679521025648 has 20 divisors (see below), whose sum is σ = 3307417431528. Its totient is φ = 825993946560.

The previous prime is 1679521025641. The next prime is 1679521025761. The reversal of 1679521025648 is 8465201259761.

It is a junction number, because it is equal to n+sod(n) for n = 1679521025593 and 1679521025602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679521025641) 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, 860409386 + ... + 860411337.

Almost surely, 2^{1679521025648} is an apocalyptic number.

It is an amenable number.

1679521025648 is a deficient number, since it is larger than the sum of its proper divisors (1627896405880).

1679521025648 is a wasteful number, since it uses less digits than its factorization.

1679521025648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720820792 (or 1720820786 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 1679521025648 in words is "one trillion, six hundred seventy-nine billion, five hundred twenty-one million, twenty-five thousand, six hundred forty-eight".