2124117644661 has 6 divisors (see below), whose sum is σ = 3068169931190. Its totient is φ = 1416078429768.

The previous prime is 2124117644603. The next prime is 2124117644707. The reversal of 2124117644661 is 1664467114212.

2124117644661 is a `hidden beast` number, since 2 + 12 + 4 + 1 + 176 + 4 + 466 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1258648391025 + 865469253636 = 1121895^2 + 930306^2 .

It is not a de Polignac number, because 2124117644661 - 2¹¹ = 2124117642613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124117644161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118006535806 + ... + 118006535823.

Almost surely, 2^{2124117644661} is an apocalyptic number.

It is an amenable number.

2124117644661 is a deficient number, since it is larger than the sum of its proper divisors (944052286529).

2124117644661 is a wasteful number, since it uses less digits than its factorization.

2124117644661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236013071635 (or 236013071632 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 2124117644661 in words is "two trillion, one hundred twenty-four billion, one hundred seventeen million, six hundred forty-four thousand, six hundred sixty-one".