66115436652 has 24 divisors (see below), whose sum is σ = 171410391600. Its totient is φ = 22038478848.

The previous prime is 66115436591. The next prime is 66115436677. The reversal of 66115436652 is 25663451166.

It is a junction number, because it is equal to n+sod(n) for n = 66115436598 and 66115436607.

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, 306089877 + ... + 306090092.

It is an arithmetic number, because the mean of its divisors is an integer number (7142099650).

Almost surely, 2^66115436652 is an apocalyptic number.

It is an amenable number.

66115436652 is an abundant number, since it is smaller than the sum of its proper divisors (105294954948).

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

66115436652 is a wasteful number, since it uses less digits than its factorization.

66115436652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612179982 (or 612179974 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 66115436652 in words is "sixty-six billion, one hundred fifteen million, four hundred thirty-six thousand, six hundred fifty-two".