11740061681 has 4 divisors (see below), whose sum is σ = 11749462500. Its totient is φ = 11730660864.

The previous prime is 11740061659. The next prime is 11740061689. The reversal of 11740061681 is 18616004711.

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 3205258225 + 8534803456 = 56615^2 + 92384^2 .

It is a cyclic number.

It is not a de Polignac number, because 11740061681 - 2⁶ = 11740061617 is a prime.

It is a super-2 number, since 2×11740061681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11740061689) 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, 4698536 + ... + 4701033.

It is an arithmetic number, because the mean of its divisors is an integer number (2937365625).

Almost surely, 2^11740061681 is an apocalyptic number.

It is an amenable number.

11740061681 is a deficient number, since it is larger than the sum of its proper divisors (9400819).

11740061681 is an equidigital number, since it uses as much as digits as its factorization.

11740061681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400818.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 11740061681 in words is "eleven billion, seven hundred forty million, sixty-one thousand, six hundred eighty-one".