66563262252 has 36 divisors (see below), whose sum is σ = 168285393640. Its totient is φ = 22184027712.

The previous prime is 66563262251. The next prime is 66563262287. The reversal of 66563262252 is 25226236566.

It is a happy number.

66563262252 is a `hidden beast` number, since 6 + 6 + 5 + 632 + 6 + 2 + 2 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×66563262252² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66563262198 and 66563262207.

It is not an unprimeable number, because it can be changed into a prime (66563262251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66399 + ... + 370857.

Almost surely, 2^66563262252 is an apocalyptic number.

It is an amenable number.

66563262252 is an abundant number, since it is smaller than the sum of its proper divisors (101722131388).

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

66563262252 is a wasteful number, since it uses less digits than its factorization.

66563262252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310542 (or 310537 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 66563262252 in words is "sixty-six billion, five hundred sixty-three million, two hundred sixty-two thousand, two hundred fifty-two".