139018409200 has 120 divisors (see below), whose sum is σ = 364553274240. Its totient is φ = 50524588800.

The previous prime is 139018409197. The next prime is 139018409227. The reversal of 139018409200 is 2904810931.

It is a super-2 number, since 2×139018409200² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139018409200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9175231 + ... + 9190369.

It is an arithmetic number, because the mean of its divisors is an integer number (3037943952).

Almost surely, 2^139018409200 is an apocalyptic number.

139018409200 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 139018409200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182276637120).

139018409200 is an abundant number, since it is smaller than the sum of its proper divisors (225534865040).

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

139018409200 is a wasteful number, since it uses less digits than its factorization.

139018409200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17255 (or 17244 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 139018409200 in words is "one hundred thirty-nine billion, eighteen million, four hundred nine thousand, two hundred".