1650632540645 has 12 divisors (see below), whose sum is σ = 2177197963500. Its totient is φ = 1200460029120.

The previous prime is 1650632540633. The next prime is 1650632540681. The reversal of 1650632540645 is 5460452360561.

It can be written as a sum of positive squares in 2 ways, for example, as 345995709796 + 1304636830849 = 588214^2 + 1142207^2 .

It is not a de Polignac number, because 1650632540645 - 2⁴ = 1650632540629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1650632540645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1364158520 + ... + 1364159729.

It is an arithmetic number, because the mean of its divisors is an integer number (181433163625).

Almost surely, 2^{1650632540645} is an apocalyptic number.

It is an amenable number.

1650632540645 is a deficient number, since it is larger than the sum of its proper divisors (526565422855).

1650632540645 is a wasteful number, since it uses less digits than its factorization.

1650632540645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728318276 (or 2728318265 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 1650632540645 in words is "one trillion, six hundred fifty billion, six hundred thirty-two million, five hundred forty thousand, six hundred forty-five".