11671742213437 has 4 divisors (see below), whose sum is σ = 11778822417340. Its totient is φ = 11564662009536.

The previous prime is 11671742213407. The next prime is 11671742213531. The reversal of 11671742213437 is 73431224717611.

11671742213437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2767611540996 + 8904130672441 = 1663614^2 + 2983979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11671742213437 is a prime.

It is a super-3 number, since 3×11671742213437³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11671742213407) 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, 53540101788 + ... + 53540102005.

It is an arithmetic number, because the mean of its divisors is an integer number (2944705604335).

Almost surely, 2^{11671742213437} is an apocalyptic number.

It is an amenable number.

11671742213437 is a deficient number, since it is larger than the sum of its proper divisors (107080203903).

11671742213437 is a wasteful number, since it uses less digits than its factorization.

11671742213437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107080203902.

The product of its digits is 1185408, while the sum is 49.

The spelling of 11671742213437 in words is "eleven trillion, six hundred seventy-one billion, seven hundred forty-two million, two hundred thirteen thousand, four hundred thirty-seven".