139636648212 has 24 divisors (see below), whose sum is σ = 326678536800. Its totient is φ = 46422736416.

The previous prime is 139636648201. The next prime is 139636648219. The reversal of 139636648212 is 212846636931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139636648219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15346887 + ... + 15355982.

It is an arithmetic number, because the mean of its divisors is an integer number (13611605700).

Almost surely, 2^139636648212 is an apocalyptic number.

139636648212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139636648212 is an abundant number, since it is smaller than the sum of its proper divisors (187041888588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139636648212 is a wasteful number, since it uses less digits than its factorization.

139636648212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30703255 (or 30703253 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 51.

The spelling of 139636648212 in words is "one hundred thirty-nine billion, six hundred thirty-six million, six hundred forty-eight thousand, two hundred twelve".