2151133644244 has 12 divisors (see below), whose sum is σ = 4054059560404. Its totient is φ = 992830912704.

The previous prime is 2151133644241. The next prime is 2151133644251. The reversal of 2151133644244 is 4424463311512.

It can be written as a sum of positive squares in 2 ways, for example, as 426082562500 + 1725051081744 = 652750^2 + 1313412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2151133644197 and 2151133644206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151133644241) 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, 20683977297 + ... + 20683977400.

Almost surely, 2^{2151133644244} is an apocalyptic number.

It is an amenable number.

2151133644244 is a deficient number, since it is larger than the sum of its proper divisors (1902925916160).

2151133644244 is a wasteful number, since it uses less digits than its factorization.

2151133644244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41367954714 (or 41367954712 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

Adding to 2151133644244 its reverse (4424463311512), we get a palindrome (6575596955756).

The spelling of 2151133644244 in words is "two trillion, one hundred fifty-one billion, one hundred thirty-three million, six hundred forty-four thousand, two hundred forty-four".