1656608257264 has 20 divisors (see below), whose sum is σ = 3349229738256. Its totient is φ = 792290905472.

The previous prime is 1656608257247. The next prime is 1656608257279. The reversal of 1656608257264 is 4627528066561.

It is a junction number, because it is equal to n+sod(n) for n = 1656608257199 and 1656608257208.

It is a congruent 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, 2250826069 + ... + 2250826804.

Almost surely, 2^{1656608257264} is an apocalyptic number.

It is an amenable number.

1656608257264 is an abundant number, since it is smaller than the sum of its proper divisors (1692621480992).

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

1656608257264 is a wasteful number, since it uses less digits than its factorization.

1656608257264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501652904 (or 4501652898 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 1656608257264 in words is "one trillion, six hundred fifty-six billion, six hundred eight million, two hundred fifty-seven thousand, two hundred sixty-four".