147815215439 has 4 divisors (see below), whose sum is σ = 155594963640. Its totient is φ = 140035467240.

The previous prime is 147815215417. The next prime is 147815215447. The reversal of 147815215439 is 934512518741.

147815215439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 147815215439 - 2¹² = 147815211343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147815215459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3889874072 + ... + 3889874109.

It is an arithmetic number, because the mean of its divisors is an integer number (38898740910).

Almost surely, 2^147815215439 is an apocalyptic number.

147815215439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

147815215439 is a deficient number, since it is larger than the sum of its proper divisors (7779748201).

147815215439 is an equidigital number, since it uses as much as digits as its factorization.

147815215439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7779748200.

The product of its digits is 1209600, while the sum is 50.

The spelling of 147815215439 in words is "one hundred forty-seven billion, eight hundred fifteen million, two hundred fifteen thousand, four hundred thirty-nine".