66954087288 has 48 divisors (see below), whose sum is σ = 197818896600. Its totient is φ = 20289117120.

The previous prime is 66954087287. The next prime is 66954087307. The reversal of 66954087288 is 88278045966.

66954087288 is a `hidden beast` number, since 6 + 6 + 9 + 540 + 8 + 7 + 2 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66954087287) 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, 42268203 + ... + 42269786.

Almost surely, 2^66954087288 is an apocalyptic number.

It is an amenable number.

66954087288 is an abundant number, since it is smaller than the sum of its proper divisors (130864809312).

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

66954087288 is a wasteful number, since it uses less digits than its factorization.

66954087288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84538012 (or 84538005 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 66954087288 in words is "sixty-six billion, nine hundred fifty-four million, eighty-seven thousand, two hundred eighty-eight".