664175614722 has 8 divisors (see below), whose sum is σ = 1328351229456. Its totient is φ = 221391871572.

The previous prime is 664175614703. The next prime is 664175614723. The reversal of 664175614722 is 227416571466.

664175614722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

664175614722 is an admirable number.

It is a super-2 number, since 2×664175614722² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (664175614723) 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, 55347967888 + ... + 55347967899.

It is an arithmetic number, because the mean of its divisors is an integer number (166043903682).

Almost surely, 2^664175614722 is an apocalyptic number.

664175614722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

664175614722 is a wasteful number, since it uses less digits than its factorization.

664175614722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110695935792.

The product of its digits is 3386880, while the sum is 51.

The spelling of 664175614722 in words is "six hundred sixty-four billion, one hundred seventy-five million, six hundred fourteen thousand, seven hundred twenty-two".