66202530225601 has 32 divisors (see below), whose sum is σ = 84665762979840. Its totient is φ = 50260077763200.

The previous prime is 66202530225547. The next prime is 66202530225613. The reversal of 66202530225601 is 10652203520266.

It is a de Polignac number, because none of the positive numbers 2^k-66202530225601 is a prime.

It is a super-2 number, since 2×66202530225601² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66202530225661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11855121 + ... + 16521166.

It is an arithmetic number, because the mean of its divisors is an integer number (2645805093120).

Almost surely, 2^{66202530225601} is an apocalyptic number.

It is an amenable number.

66202530225601 is a deficient number, since it is larger than the sum of its proper divisors (18463232754239).

66202530225601 is a wasteful number, since it uses less digits than its factorization.

66202530225601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28377085.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 66202530225601 its reverse (10652203520266), we get a palindrome (76854733745867).

The spelling of 66202530225601 in words is "sixty-six trillion, two hundred two billion, five hundred thirty million, two hundred twenty-five thousand, six hundred one".