64160066581522 has 16 divisors (see below), whose sum is σ = 99581680062360. Its totient is φ = 30966683362048.

The previous prime is 64160066581519. The next prime is 64160066581603. The reversal of 64160066581522 is 22518566006146.

It can be written as a sum of positive squares in 4 ways, for example, as 44304745504761 + 19855321076761 = 6656181^2 + 4455931^2 .

It is a super-3 number, since 3×64160066581522³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 64160066581522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127279933 + ... + 127783024.

Almost surely, 2^{64160066581522} is an apocalyptic number.

64160066581522 is a deficient number, since it is larger than the sum of its proper divisors (35421613480838).

64160066581522 is a wasteful number, since it uses less digits than its factorization.

64160066581522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255067325.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 64160066581522 in words is "sixty-four trillion, one hundred sixty billion, sixty-six million, five hundred eighty-one thousand, five hundred twenty-two".