139285505235912 has 256 divisors, whose sum is σ = 433462005504000. Its totient is φ = 36410802075648.

The previous prime is 139285505235889. The next prime is 139285505235913. The reversal of 139285505235912 is 219532505582931.

It is not an unprimeable number, because it can be changed into a prime (139285505235913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6514738 + ... + 17916830.

It is an arithmetic number, because the mean of its divisors is an integer number (1693210959000).

Almost surely, 2^{139285505235912} is an apocalyptic number.

139285505235912 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 139285505235912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216731002752000).

139285505235912 is an abundant number, since it is smaller than the sum of its proper divisors (294176500268088).

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

139285505235912 is a wasteful number, since it uses less digits than its factorization.

139285505235912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11402260 (or 11402256 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 60.

The spelling of 139285505235912 in words is "one hundred thirty-nine trillion, two hundred eighty-five billion, five hundred five million, two hundred thirty-five thousand, nine hundred twelve".