139244245218 has 96 divisors (see below), whose sum is σ = 345057777792. Its totient is φ = 40201920000.

The previous prime is 139244245211. The next prime is 139244245243. The reversal of 139244245218 is 812542442931.

139244245218 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 4 + 424 + 5 + 218 = 666.

It is not an unprimeable number, because it can be changed into a prime (139244245211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1263843 + ... + 1369593.

It is an arithmetic number, because the mean of its divisors is an integer number (3594351852).

Almost surely, 2^139244245218 is an apocalyptic number.

139244245218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139244245218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172528888896).

139244245218 is an abundant number, since it is smaller than the sum of its proper divisors (205813532574).

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

139244245218 is a wasteful number, since it uses less digits than its factorization.

139244245218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106120 (or 106117 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 139244245218 in words is "one hundred thirty-nine billion, two hundred forty-four million, two hundred forty-five thousand, two hundred eighteen".