2231644161442 has 12 divisors (see below), whose sum is σ = 3440383497810. Its totient is φ = 1085664725856.

The previous prime is 2231644161431. The next prime is 2231644161491. The reversal of 2231644161442 is 2441614461322.

It can be written as a sum of positive squares in 3 ways, for example, as 2067668567721 + 163975593721 = 1437939^2 + 404939^2 .

It is a super-3 number, since 3×2231644161442³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231644161395 and 2231644161404.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 407529067 + ... + 407534542.

Almost surely, 2^{2231644161442} is an apocalyptic number.

2231644161442 is a deficient number, since it is larger than the sum of its proper divisors (1208739336368).

2231644161442 is an equidigital number, since it uses as much as digits as its factorization.

2231644161442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815063685 (or 815063648 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The spelling of 2231644161442 in words is "two trillion, two hundred thirty-one billion, six hundred forty-four million, one hundred sixty-one thousand, four hundred forty-two".