639222222936 has 32 divisors (see below), whose sum is σ = 1743333336000. Its totient is φ = 193703703840.

The previous prime is 639222222923. The next prime is 639222222941.

639222222936 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210647886 + ... + 1210648413.

It is an arithmetic number, because the mean of its divisors is an integer number (54479166750).

Almost surely, 2^639222222936 is an apocalyptic number.

639222222936 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

639222222936 is an abundant number, since it is smaller than the sum of its proper divisors (1104111113064).

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

639222222936 is a wasteful number, since it uses less digits than its factorization.

639222222936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421296319 (or 2421296315 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 48.

The spelling of 639222222936 in words is "six hundred thirty-nine billion, two hundred twenty-two million, two hundred twenty-two thousand, nine hundred thirty-six".