139109981472 has 768 divisors, whose sum is σ = 531488563200. Its totient is φ = 34323886080.

The previous prime is 139109981471. The next prime is 139109981497. The reversal of 139109981472 is 274189901931.

139109981472 is a `hidden beast` number, since 1 + 3 + 9 + 1 + 0 + 99 + 81 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (139109981471) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 350402778 + ... + 350403174.

It is an arithmetic number, because the mean of its divisors is an integer number (692042400).

Almost surely, 2^139109981472 is an apocalyptic number.

139109981472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139109981472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265744281600).

139109981472 is an abundant number, since it is smaller than the sum of its proper divisors (392378581728).

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

139109981472 is a wasteful number, since it uses less digits than its factorization.

139109981472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 139109981472 in words is "one hundred thirty-nine billion, one hundred nine million, nine hundred eighty-one thousand, four hundred seventy-two".