2163642533044 has 6 divisors (see below), whose sum is σ = 3786374432834. Its totient is φ = 1081821266520.

The previous prime is 2163642532993. The next prime is 2163642533053. The reversal of 2163642533044 is 4403352463612.

It can be written as a sum of positive squares in only one way, i.e., 2078320123044 + 85322410000 = 1441638^2 + 292100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270455316627 + ... + 270455316634.

Almost surely, 2^{2163642533044} is an apocalyptic number.

It is an amenable number.

2163642533044 is a deficient number, since it is larger than the sum of its proper divisors (1622731899790).

2163642533044 is a wasteful number, since it uses less digits than its factorization.

2163642533044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540910633265 (or 540910633263 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

Adding to 2163642533044 its reverse (4403352463612), we get a palindrome (6566994996656).

The spelling of 2163642533044 in words is "two trillion, one hundred sixty-three billion, six hundred forty-two million, five hundred thirty-three thousand, forty-four".