136671221248 has 20 divisors (see below), whose sum is σ = 273075507540. Its totient is φ = 68335610368.

The previous prime is 136671221213. The next prime is 136671221273. The reversal of 136671221248 is 842122176631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133467478 + ... + 133468501.

It is an arithmetic number, because the mean of its divisors is an integer number (13653775377).

Almost surely, 2^136671221248 is an apocalyptic number.

It is an amenable number.

136671221248 is a deficient number, since it is larger than the sum of its proper divisors (136404286292).

136671221248 is an frugal number, since it uses more digits than its factorization.

136671221248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266935997 (or 266935981 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

Adding to 136671221248 its reverse (842122176631), we get a palindrome (978793397879).

The spelling of 136671221248 in words is "one hundred thirty-six billion, six hundred seventy-one million, two hundred twenty-one thousand, two hundred forty-eight".