64121121622 has 32 divisors (see below), whose sum is σ = 98875953792. Its totient is φ = 31175457984.

The previous prime is 64121121563. The next prime is 64121121653. The reversal of 64121121622 is 22612112146.

It is a super-2 number, since 2×64121121622² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24500458 + ... + 24503074.

It is an arithmetic number, because the mean of its divisors is an integer number (3089873556).

Almost surely, 2^64121121622 is an apocalyptic number.

64121121622 is a deficient number, since it is larger than the sum of its proper divisors (34754832170).

64121121622 is a wasteful number, since it uses less digits than its factorization.

64121121622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

The product of its digits is 2304, while the sum is 28.

Adding to 64121121622 its reverse (22612112146), we get a palindrome (86733233768).

The spelling of 64121121622 in words is "sixty-four billion, one hundred twenty-one million, one hundred twenty-one thousand, six hundred twenty-two".