1651975525264 has 15 divisors (see below), whose sum is σ = 3200712541243. Its totient is φ = 825985192048.

The previous prime is 1651975525243. The next prime is 1651975525273. The reversal of 1651975525264 is 4625255791561.

The square root of 1651975525264 is 1285292.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1651975525199 and 1651975525208.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4980507 + ... + 5301829.

Almost surely, 2^{1651975525264} is an apocalyptic number.

1651975525264 is the 1285292-nd square number.

It is an amenable number.

1651975525264 is a deficient number, since it is larger than the sum of its proper divisors (1548737015979).

1651975525264 is an frugal number, since it uses more digits than its factorization.

1651975525264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642654 (or 321325 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 58.

The spelling of 1651975525264 in words is "one trillion, six hundred fifty-one billion, nine hundred seventy-five million, five hundred twenty-five thousand, two hundred sixty-four".