66001325653522 has 16 divisors (see below), whose sum is σ = 113145369024960. Its totient is φ = 28286222589648.

The previous prime is 66001325653519. The next prime is 66001325653541. The reversal of 66001325653522 is 22535652310066.

It is a super-2 number, since 2×66001325653522² (a number of 28 digits) contains 22 as substring.

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, 2228788 + ... + 11703424.

It is an arithmetic number, because the mean of its divisors is an integer number (7071585564060).

Almost surely, 2^{66001325653522} is an apocalyptic number.

66001325653522 is a deficient number, since it is larger than the sum of its proper divisors (47144043371438).

66001325653522 is a wasteful number, since it uses less digits than its factorization.

66001325653522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9972225.

The product of its (nonzero) digits is 1944000, while the sum is 46.

Adding to 66001325653522 its reverse (22535652310066), we get a palindrome (88536977963588).

The spelling of 66001325653522 in words is "sixty-six trillion, one billion, three hundred twenty-five million, six hundred fifty-three thousand, five hundred twenty-two".