634012156222 has 4 divisors (see below), whose sum is σ = 951018234336. Its totient is φ = 317006078110.

The previous prime is 634012156213. The next prime is 634012156241. The reversal of 634012156222 is 222651210436.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 158503039054 + ... + 158503039057.

It is an arithmetic number, because the mean of its divisors is an integer number (237754558584).

Almost surely, 2^634012156222 is an apocalyptic number.

634012156222 is a deficient number, since it is larger than the sum of its proper divisors (317006078114).

634012156222 is a wasteful number, since it uses less digits than its factorization.

634012156222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317006078113.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 634012156222 its reverse (222651210436), we get a palindrome (856663366658).

The spelling of 634012156222 in words is "six hundred thirty-four billion, twelve million, one hundred fifty-six thousand, two hundred twenty-two".