11681273338 has 8 divisors (see below), whose sum is σ = 20025040032. Its totient is φ = 5006259996.

The previous prime is 11681273333. The next prime is 11681273371. The reversal of 11681273338 is 83337218611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11681273294 and 11681273303.

It is not an unprimeable number, because it can be changed into a prime (11681273333) 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, 417188320 + ... + 417188347.

It is an arithmetic number, because the mean of its divisors is an integer number (2503130004).

Almost surely, 2^11681273338 is an apocalyptic number.

11681273338 is a deficient number, since it is larger than the sum of its proper divisors (8343766694).

11681273338 is an equidigital number, since it uses as much as digits as its factorization.

11681273338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834376676.

The product of its digits is 145152, while the sum is 43.

The spelling of 11681273338 in words is "eleven billion, six hundred eighty-one million, two hundred seventy-three thousand, three hundred thirty-eight".