139605490000 has 100 divisors (see below), whose sum is σ = 338429492896. Its totient is φ = 55771056000.

The previous prime is 139605489967. The next prime is 139605490007. The reversal of 139605490000 is 94506931.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139605490007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8221519 + ... + 8238481.

Almost surely, 2^139605490000 is an apocalyptic number.

139605490000 is a gapful number since it is divisible by the number (10) 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 139605490000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169214746448).

139605490000 is an abundant number, since it is smaller than the sum of its proper divisors (198824002896).

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

139605490000 is an equidigital number, since it uses as much as digits as its factorization.

139605490000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814 (or 17793 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

Adding to 139605490000 its reverse (94506931), we get a palindrome (139699996931).

The spelling of 139605490000 in words is "one hundred thirty-nine billion, six hundred five million, four hundred ninety thousand".