64224698220188 has 12 divisors (see below), whose sum is σ = 122610787511352. Its totient is φ = 29193044645520.

The previous prime is 64224698220187. The next prime is 64224698220251. The reversal of 64224698220188 is 88102289642246.

It is a super-2 number, since 2×64224698220188² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64224698220188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64224698220181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729826116095 + ... + 729826116182.

It is an arithmetic number, because the mean of its divisors is an integer number (10217565625946).

Almost surely, 2^{64224698220188} is an apocalyptic number.

It is an amenable number.

64224698220188 is a deficient number, since it is larger than the sum of its proper divisors (58386089291164).

64224698220188 is a wasteful number, since it uses less digits than its factorization.

64224698220188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459652232292 (or 1459652232290 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 62.

The spelling of 64224698220188 in words is "sixty-four trillion, two hundred twenty-four billion, six hundred ninety-eight million, two hundred twenty thousand, one hundred eighty-eight".