764144221206 has 128 divisors (see below), whose sum is σ = 1613200748544. Its totient is φ = 241076142720.

The previous prime is 764144221121. The next prime is 764144221231. The reversal of 764144221206 is 602122441467.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 657045181 + ... + 657046343.

It is an arithmetic number, because the mean of its divisors is an integer number (12603130848).

Almost surely, 2^764144221206 is an apocalyptic number.

764144221206 is an abundant number, since it is smaller than the sum of its proper divisors (849056527338).

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

764144221206 is a wasteful number, since it uses less digits than its factorization.

764144221206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 764144221206 in words is "seven hundred sixty-four billion, one hundred forty-four million, two hundred twenty-one thousand, two hundred six".