11681970529 has 16 divisors (see below), whose sum is σ = 12777785856. Its totient is φ = 10632096000.

The previous prime is 11681970527. The next prime is 11681970541. The reversal of 11681970529 is 92507918611.

It is a cyclic number.

It is not a de Polignac number, because 11681970529 - 2¹ = 11681970527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681970527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757039 + ... + 772315.

It is an arithmetic number, because the mean of its divisors is an integer number (798611616).

Almost surely, 2^11681970529 is an apocalyptic number.

It is an amenable number.

11681970529 is a deficient number, since it is larger than the sum of its proper divisors (1095815327).

11681970529 is a wasteful number, since it uses less digits than its factorization.

11681970529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16776.

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 11681970529 in words is "eleven billion, six hundred eighty-one million, nine hundred seventy thousand, five hundred twenty-nine".