664233727522 has 32 divisors (see below), whose sum is σ = 1033080023808. Its totient is φ = 320047065216.

The previous prime is 664233727517. The next prime is 664233727541. The reversal of 664233727522 is 225727332466.

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 in 15 ways as a sum of consecutive naturals, for example, 52307878 + ... + 52320574.

It is an arithmetic number, because the mean of its divisors is an integer number (32283750744).

Almost surely, 2^664233727522 is an apocalyptic number.

664233727522 is a deficient number, since it is larger than the sum of its proper divisors (368846296286).

664233727522 is a wasteful number, since it uses less digits than its factorization.

664233727522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450.

The product of its digits is 5080320, while the sum is 49.

The spelling of 664233727522 in words is "six hundred sixty-four billion, two hundred thirty-three million, seven hundred twenty-seven thousand, five hundred twenty-two".