11421427640834 has 16 divisors (see below), whose sum is σ = 17595114296760. Its totient is φ = 5557105664640.

The previous prime is 11421427640813. The next prime is 11421427640839. The reversal of 11421427640834 is 43804672412411.

It can be written as a sum of positive squares in 4 ways, for example, as 9051222675625 + 2370204965209 = 3008525^2 + 1539547^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11421427640839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178998569 + ... + 179062364.

Almost surely, 2^{11421427640834} is an apocalyptic number.

11421427640834 is a deficient number, since it is larger than the sum of its proper divisors (6173686655926).

11421427640834 is a wasteful number, since it uses less digits than its factorization.

11421427640834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358061365.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 11421427640834 in words is "eleven trillion, four hundred twenty-one billion, four hundred twenty-seven million, six hundred forty thousand, eight hundred thirty-four".