639139286153 has 8 divisors (see below), whose sum is σ = 641846595720. Its totient is φ = 636432433920.

The previous prime is 639139286131. The next prime is 639139286161. The reversal of 639139286153 is 351682931936.

It is a happy number.

639139286153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 471271266064 + 167868020089 = 686492^2 + 409717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 639139286153 - 2²² = 639135091849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (639139288153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848751 + ... + 3064907.

It is an arithmetic number, because the mean of its divisors is an integer number (80230824465).

Almost surely, 2^639139286153 is an apocalyptic number.

It is an amenable number.

639139286153 is a deficient number, since it is larger than the sum of its proper divisors (2707309567).

639139286153 is a wasteful number, since it uses less digits than its factorization.

639139286153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228667.

The product of its digits is 6298560, while the sum is 56.

The spelling of 639139286153 in words is "six hundred thirty-nine billion, one hundred thirty-nine million, two hundred eighty-six thousand, one hundred fifty-three".