66553487468 has 24 divisors (see below), whose sum is σ = 125436003168. Its totient is φ = 30714967296.

The previous prime is 66553487461. The next prime is 66553487491. The reversal of 66553487468 is 86478435566.

It is a happy number.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66553487468.

It is not an unprimeable number, because it can be changed into a prime (66553487461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996905 + ... + 1061567.

It is an arithmetic number, because the mean of its divisors is an integer number (5226500132).

Almost surely, 2^66553487468 is an apocalyptic number.

It is an amenable number.

66553487468 is a deficient number, since it is larger than the sum of its proper divisors (58882515700).

66553487468 is a wasteful number, since it uses less digits than its factorization.

66553487468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84473 (or 84471 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 62.

The spelling of 66553487468 in words is "sixty-six billion, five hundred fifty-three million, four hundred eighty-seven thousand, four hundred sixty-eight".