66610466052 has 24 divisors (see below), whose sum is σ = 167380145856. Its totient is φ = 20495527968.

The previous prime is 66610466047. The next prime is 66610466107. The reversal of 66610466052 is 25066401666.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66610465995 and 66610466013.

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, 213494928 + ... + 213495239.

It is an arithmetic number, because the mean of its divisors is an integer number (6974172744).

Almost surely, 2^66610466052 is an apocalyptic number.

It is an amenable number.

66610466052 is an abundant number, since it is smaller than the sum of its proper divisors (100769679804).

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

66610466052 is a wasteful number, since it uses less digits than its factorization.

66610466052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426990187 (or 426990185 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 66610466052 in words is "sixty-six billion, six hundred ten million, four hundred sixty-six thousand, fifty-two".